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diff --git a/doc/ci/variables/README.md b/doc/ci/variables/README.md
index 8827961d86c..12b027e7d79 100644
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+++ b/doc/ci/variables/README.md
@@ -40,107 +40,7 @@ about which variables are [not supported](where_variables_can_be_used.md).
## Predefined environment variables
-Some of the predefined environment variables are available only if a minimum
-version of [GitLab Runner](https://docs.gitlab.com/runner/) is used. Consult the table below to find the
-version of Runner required.
-
-NOTE: **Note:**
-Starting with GitLab 9.0, we have deprecated some variables.
-Read the [deprecated variables](deprecated_variables.md)
-document to find out their replacements. **You are strongly advised
-to use the new variables as we will remove the old ones in future
-GitLab releases.**
-
-| Variable | GitLab | Runner | Description |
-|-------------------------------------------|--------|--------|-------------|
-| **ARTIFACT_DOWNLOAD_ATTEMPTS** | 8.15 | 1.9 | Number of attempts to download artifacts running a job |
-| **CHAT_INPUT** | 10.6 | all | Additional arguments passed in the [ChatOps](../chatops/README.md) command |
-| **CHAT_CHANNEL** | 10.6 | all | Source chat channel which triggered the [ChatOps](../chatops/README.md) command |
-| **CI** | all | 0.4 | Mark that job is executed in CI environment |
-| **CI_COMMIT_BEFORE_SHA** | 11.2 | all | The previous latest commit present on a branch before a push request. |
-| **CI_COMMIT_DESCRIPTION** | 10.8 | all | The description of the commit: the message without first line, if the title is shorter than 100 characters; full message in other case. |
-| **CI_COMMIT_MESSAGE** | 10.8 | all | The full commit message. |
-| **CI_COMMIT_REF_NAME** | 9.0 | all | The branch or tag name for which project is built |
-| **CI_COMMIT_REF_SLUG** | 9.0 | all | `$CI_COMMIT_REF_NAME` lowercased, shortened to 63 bytes, and with everything except `0-9` and `a-z` replaced with `-`. No leading / trailing `-`. Use in URLs, host names and domain names. |
-| **CI_COMMIT_SHA** | 9.0 | all | The commit revision for which project is built |
-| **CI_COMMIT_SHORT_SHA** | 11.7 | all | The first eight characters of `CI_COMMIT_SHA` |
-| **CI_COMMIT_TAG** | 9.0 | 0.5 | The commit tag name. Present only when building tags. |
-| **CI_COMMIT_TITLE** | 10.8 | all | The title of the commit - the full first line of the message |
-| **CI_CONFIG_PATH** | 9.4 | 0.5 | The path to CI config file. Defaults to `.gitlab-ci.yml` |
-| **CI_DEBUG_TRACE** | all | 1.7 | Whether [debug tracing](#debug-tracing) is enabled |
-| **CI_DEPLOY_PASSWORD** | 10.8 | all | Authentication password of the [GitLab Deploy Token][gitlab-deploy-token], only present if the Project has one related.|
-| **CI_DEPLOY_USER** | 10.8 | all | Authentication username of the [GitLab Deploy Token][gitlab-deploy-token], only present if the Project has one related.|
-| **CI_DISPOSABLE_ENVIRONMENT** | all | 10.1 | Marks that the job is executed in a disposable environment (something that is created only for this job and disposed of/destroyed after the execution - all executors except `shell` and `ssh`). If the environment is disposable, it is set to true, otherwise it is not defined at all. |
-| **CI_ENVIRONMENT_NAME** | 8.15 | all | The name of the environment for this job. Only present if [`environment:name`](../yaml/README.md#environmentname) is set. |
-| **CI_ENVIRONMENT_SLUG** | 8.15 | all | A simplified version of the environment name, suitable for inclusion in DNS, URLs, Kubernetes labels, etc. Only present if [`environment:name`](../yaml/README.md#environmentname) is set. |
-| **CI_ENVIRONMENT_URL** | 9.3 | all | The URL of the environment for this job. Only present if [`environment:url`](../yaml/README.md#environmenturl) is set. |
-| **CI_JOB_ID** | 9.0 | all | The unique id of the current job that GitLab CI uses internally |
-| **CI_JOB_MANUAL** | 8.12 | all | The flag to indicate that job was manually started |
-| **CI_JOB_NAME** | 9.0 | 0.5 | The name of the job as defined in `.gitlab-ci.yml` |
-| **CI_JOB_STAGE** | 9.0 | 0.5 | The name of the stage as defined in `.gitlab-ci.yml` |
-| **CI_JOB_TOKEN** | 9.0 | 1.2 | Token used for authenticating with the [GitLab Container Registry][registry] and downloading [dependent repositories][dependent-repositories] |
-| **CI_JOB_URL** | 11.1 | 0.5 | Job details URL |
-| **CI_MERGE_REQUEST_ID** | 11.6 | all | The ID of the merge request if [the pipelines are for merge requests](../merge_request_pipelines/index.md) |
-| **CI_MERGE_REQUEST_IID** | 11.6 | all | The IID of the merge request if [the pipelines are for merge requests](../merge_request_pipelines/index.md) |
-| **CI_MERGE_REQUEST_PROJECT_ID** | 11.6 | all | The ID of the project of the merge request if [the pipelines are for merge requests](../merge_request_pipelines/index.md) |
-| **CI_MERGE_REQUEST_PROJECT_PATH** | 11.6 | all | The path of the project of the merge request if [the pipelines are for merge requests](../merge_request_pipelines/index.md) (e.g. `namespace/awesome-project`) |
-| **CI_MERGE_REQUEST_PROJECT_URL** | 11.6 | all | The URL of the project of the merge request if [the pipelines are for merge requests](../merge_request_pipelines/index.md) (e.g. `http://192.168.10.15:3000/namespace/awesome-project`) |
-| **CI_MERGE_REQUEST_REF_PATH** | 11.6 | all | The ref path of the merge request if [the pipelines are for merge requests](../merge_request_pipelines/index.md). (e.g. `refs/merge-requests/1/head`) |
-| **CI_MERGE_REQUEST_SOURCE_BRANCH_NAME** | 11.6 | all | The source branch name of the merge request if [the pipelines are for merge requests](../merge_request_pipelines/index.md) |
-| **CI_MERGE_REQUEST_SOURCE_BRANCH_SHA** | 11.9 | all | The HEAD sha of the source branch of the merge request if [the pipelines are for merge requests](../merge_request_pipelines/index.md) |
-| **CI_MERGE_REQUEST_SOURCE_PROJECT_ID** | 11.6 | all | The ID of the source project of the merge request if [the pipelines are for merge requests](../merge_request_pipelines/index.md) |
-| **CI_MERGE_REQUEST_SOURCE_PROJECT_PATH** | 11.6 | all | The path of the source project of the merge request if [the pipelines are for merge requests](../merge_request_pipelines/index.md) |
-| **CI_MERGE_REQUEST_SOURCE_PROJECT_URL** | 11.6 | all | The URL of the source project of the merge request if [the pipelines are for merge requests](../merge_request_pipelines/index.md) |
-| **CI_MERGE_REQUEST_TARGET_BRANCH_NAME** | 11.6 | all | The target branch name of the merge request if [the pipelines are for merge requests](../merge_request_pipelines/index.md) |
-| **CI_MERGE_REQUEST_TARGET_BRANCH_SHA** | 11.9 | all | The HEAD sha of the target branch of the merge request if [the pipelines are for merge requests](../merge_request_pipelines/index.md) |
-| **CI_MERGE_REQUEST_TITLE** | 11.9 | all | The title of the merge request if [the pipelines are for merge requests](../merge_request_pipelines/index.md) |
-| **CI_MERGE_REQUEST_ASSIGNEES** | 11.9 | all | Comma-separated list of usernames of assignees for the merge request if [the pipelines are for merge requests](../merge_request_pipelines/index.md). [Multiple assignees for merge requests](https://gitlab.com/gitlab-org/gitlab-ee/issues/2004) is scheduled for a future release |
-| **CI_MERGE_REQUEST_MILESTONE** | 11.9 | all | The milestone title of the merge request if [the pipelines are for merge requests](../merge_request_pipelines/index.md) |
-| **CI_MERGE_REQUEST_LABELS** | 11.9 | all | Comma-separated label names of the merge request if [the pipelines are for merge requests](../merge_request_pipelines/index.md) |
-| **CI_NODE_INDEX** | 11.5 | all | Index of the job in the job set. If the job is not parallelized, this variable is not set. |
-| **CI_NODE_TOTAL** | 11.5 | all | Total number of instances of this job running in parallel. If the job is not parallelized, this variable is set to `1`. |
-| **CI_API_V4_URL** | 11.7 | all | The GitLab API v4 root URL |
-| **CI_PAGES_DOMAIN** | 11.8 | all | The configured domain that hosts GitLab Pages. |
-| **CI_PAGES_URL** | 11.8 | all | URL to GitLab Pages-built pages. Always belongs to a subdomain of `CI_PAGES_DOMAIN`. |
-| **CI_PIPELINE_ID** | 8.10 | all | The unique id of the current pipeline that GitLab CI uses internally |
-| **CI_PIPELINE_IID** | 11.0 | all | The unique id of the current pipeline scoped to project |
-| **CI_PIPELINE_SOURCE** | 10.0 | all | Indicates how the pipeline was triggered. Possible options are: `push`, `web`, `trigger`, `schedule`, `api`, and `pipeline`. For pipelines created before GitLab 9.5, this will show as `unknown` |
-| **CI_PIPELINE_TRIGGERED** | all | all | The flag to indicate that job was [triggered] |
-| **CI_PIPELINE_URL** | 11.1 | 0.5 | Pipeline details URL |
-| **CI_PROJECT_DIR** | all | all | The full path where the repository is cloned and where the job is run. If the GitLab Runner `builds_dir` parameter is set, this variable is set relative to the value of `builds_dir`. For more information, see [Advanced configuration](https://docs.gitlab.com/runner/configuration/advanced-configuration.html#the-runners-section) for GitLab Runner. |
-| **CI_PROJECT_ID** | all | all | The unique id of the current project that GitLab CI uses internally |
-| **CI_PROJECT_NAME** | 8.10 | 0.5 | The project name that is currently being built (actually it is project folder name) |
-| **CI_PROJECT_NAMESPACE** | 8.10 | 0.5 | The project namespace (username or groupname) that is currently being built |
-| **CI_PROJECT_PATH** | 8.10 | 0.5 | The namespace with project name |
-| **CI_PROJECT_PATH_SLUG** | 9.3 | all | `$CI_PROJECT_PATH` lowercased and with everything except `0-9` and `a-z` replaced with `-`. Use in URLs and domain names. |
-| **CI_PROJECT_URL** | 8.10 | 0.5 | The HTTP(S) address to access project |
-| **CI_PROJECT_VISIBILITY** | 10.3 | all | The project visibility (internal, private, public) |
-| **CI_REGISTRY** | 8.10 | 0.5 | If the Container Registry is enabled it returns the address of GitLab's Container Registry |
-| **CI_REGISTRY_IMAGE** | 8.10 | 0.5 | If the Container Registry is enabled for the project it returns the address of the registry tied to the specific project |
-| **CI_REGISTRY_PASSWORD** | 9.0 | all | The password to use to push containers to the GitLab Container Registry |
-| **CI_REGISTRY_USER** | 9.0 | all | The username to use to push containers to the GitLab Container Registry |
-| **CI_REPOSITORY_URL** | 9.0 | all | The URL to clone the Git repository |
-| **CI_RUNNER_DESCRIPTION** | 8.10 | 0.5 | The description of the runner as saved in GitLab |
-| **CI_RUNNER_EXECUTABLE_ARCH** | all | 10.6 | The OS/architecture of the GitLab Runner executable (note that this is not necessarily the same as the environment of the executor) |
-| **CI_RUNNER_ID** | 8.10 | 0.5 | The unique id of runner being used |
-| **CI_RUNNER_REVISION** | all | 10.6 | GitLab Runner revision that is executing the current job |
-| **CI_RUNNER_TAGS** | 8.10 | 0.5 | The defined runner tags |
-| **CI_RUNNER_VERSION** | all | 10.6 | GitLab Runner version that is executing the current job |
-| **CI_SERVER** | all | all | Mark that job is executed in CI environment |
-| **CI_SERVER_NAME** | all | all | The name of CI server that is used to coordinate jobs |
-| **CI_SERVER_REVISION** | all | all | GitLab revision that is used to schedule jobs |
-| **CI_SERVER_VERSION** | all | all | GitLab version that is used to schedule jobs |
-| **CI_SERVER_VERSION_MAJOR** | 11.4 | all | GitLab version major component |
-| **CI_SERVER_VERSION_MINOR** | 11.4 | all | GitLab version minor component |
-| **CI_SERVER_VERSION_PATCH** | 11.4 | all | GitLab version patch component |
-| **CI_SHARED_ENVIRONMENT** | all | 10.1 | Marks that the job is executed in a shared environment (something that is persisted across CI invocations like `shell` or `ssh` executor). If the environment is shared, it is set to true, otherwise it is not defined at all. |
-| **GET_SOURCES_ATTEMPTS** | 8.15 | 1.9 | Number of attempts to fetch sources running a job |
-| **GITLAB_CI** | all | all | Mark that job is executed in GitLab CI environment |
-| **GITLAB_USER_EMAIL** | 8.12 | all | The email of the user who started the job |
-| **GITLAB_USER_ID** | 8.12 | all | The id of the user who started the job |
-| **GITLAB_USER_LOGIN** | 10.0 | all | The login username of the user who started the job |
-| **GITLAB_USER_NAME** | 10.0 | all | The real name of the user who started the job |
-| **RESTORE_CACHE_ATTEMPTS** | 8.15 | 1.9 | Number of attempts to restore the cache running a job |
+See [full reference of predefined environment variables](predefined_variables.md).
## `.gitlab-ci.yml` defined variables
diff --git a/doc/ci/variables/predefined_variables.md b/doc/ci/variables/predefined_variables.md
new file mode 100644
index 00000000000..416627740d2
--- /dev/null
+++ b/doc/ci/variables/predefined_variables.md
@@ -0,0 +1,110 @@
+# Predefined environment variables reference
+
+For an introduction on this subject, read through the
+[getting started with environment variables](README.md) document.
+
+## Overview
+
+Some of the predefined environment variables are available only if a minimum
+version of [GitLab Runner](https://docs.gitlab.com/runner/) is used. Consult the table below to find the
+version of Runner required.
+
+NOTE: **Note:**
+Starting with GitLab 9.0, we have deprecated some variables. Read the
+[9.0 Renaming](deprecated_variables.md#gitlab-90-renamed-variables) section to find out their replacements. **You are
+strongly advised to use the new variables as we will remove the old ones in
+future GitLab releases.**
+
+## Variables reference
+
+| Variable | GitLab | Runner | Description |
+|-------------------------------------------|--------|--------|-------------|
+| `ARTIFACT_DOWNLOAD_ATTEMPTS` | 8.15 | 1.9 | Number of attempts to download artifacts running a job |
+| `CHAT_INPUT` | 10.6 | all | Additional arguments passed in the [ChatOps](../chatops/README.md) command |
+| `CHAT_CHANNEL` | 10.6 | all | Source chat channel which triggered the [ChatOps](../chatops/README.md) command |
+| `CI` | all | 0.4 | Mark that job is executed in CI environment |
+| `CI_COMMIT_BEFORE_SHA` | 11.2 | all | The previous latest commit present on a branch before a push request. |
+| `CI_COMMIT_DESCRIPTION` | 10.8 | all | The description of the commit: the message without first line, if the title is shorter than 100 characters; full message in other case. |
+| `CI_COMMIT_MESSAGE` | 10.8 | all | The full commit message. |
+| `CI_COMMIT_REF_NAME` | 9.0 | all | The branch or tag name for which project is built |
+| `CI_COMMIT_REF_SLUG` | 9.0 | all | `$CI_COMMIT_REF_NAME` lowercased, shortened to 63 bytes, and with everything except `0-9` and `a-z` replaced with `-`. No leading / trailing `-`. Use in URLs, host names and domain names. |
+| `CI_COMMIT_SHA` | 9.0 | all | The commit revision for which project is built |
+| `CI_COMMIT_SHORT_SHA` | 11.7 | all | The first eight characters of `CI_COMMIT_SHA` |
+| `CI_COMMIT_TAG` | 9.0 | 0.5 | The commit tag name. Present only when building tags. |
+| `CI_COMMIT_TITLE` | 10.8 | all | The title of the commit - the full first line of the message |
+| `CI_CONFIG_PATH` | 9.4 | 0.5 | The path to CI config file. Defaults to `.gitlab-ci.yml` |
+| `CI_DEBUG_TRACE` | all | 1.7 | Whether [debug tracing](#debug-tracing) is enabled |
+| `CI_DEPLOY_PASSWORD` | 10.8 | all | Authentication password of the [GitLab Deploy Token][gitlab-deploy-token], only present if the Project has one related.|
+| `CI_DEPLOY_USER` | 10.8 | all | Authentication username of the [GitLab Deploy Token][gitlab-deploy-token], only present if the Project has one related.|
+| `CI_DISPOSABLE_ENVIRONMENT` | all | 10.1 | Marks that the job is executed in a disposable environment (something that is created only for this job and disposed of/destroyed after the execution - all executors except `shell` and `ssh`). If the environment is disposable, it is set to true, otherwise it is not defined at all. |
+| `CI_ENVIRONMENT_NAME` | 8.15 | all | The name of the environment for this job. Only present if [`environment:name`](../yaml/README.md#environmentname) is set. |
+| `CI_ENVIRONMENT_SLUG` | 8.15 | all | A simplified version of the environment name, suitable for inclusion in DNS, URLs, Kubernetes labels, etc. Only present if [`environment:name`](../yaml/README.md#environmentname) is set. |
+| `CI_ENVIRONMENT_URL` | 9.3 | all | The URL of the environment for this job. Only present if [`environment:url`](../yaml/README.md#environmenturl) is set. |
+| `CI_JOB_ID` | 9.0 | all | The unique id of the current job that GitLab CI uses internally |
+| `CI_JOB_MANUAL` | 8.12 | all | The flag to indicate that job was manually started |
+| `CI_JOB_NAME` | 9.0 | 0.5 | The name of the job as defined in `.gitlab-ci.yml` |
+| `CI_JOB_STAGE` | 9.0 | 0.5 | The name of the stage as defined in `.gitlab-ci.yml` |
+| `CI_JOB_TOKEN` | 9.0 | 1.2 | Token used for authenticating with the [GitLab Container Registry][registry] and downloading [dependent repositories][dependent-repositories] |
+| `CI_JOB_URL` | 11.1 | 0.5 | Job details URL |
+| `CI_MERGE_REQUEST_ID` | 11.6 | all | The ID of the merge request if [the pipelines are for merge requests](../merge_request_pipelines/index.md) |
+| `CI_MERGE_REQUEST_IID` | 11.6 | all | The IID of the merge request if [the pipelines are for merge requests](../merge_request_pipelines/index.md) |
+| `CI_MERGE_REQUEST_PROJECT_ID` | 11.6 | all | The ID of the project of the merge request if [the pipelines are for merge requests](../merge_request_pipelines/index.md) |
+| `CI_MERGE_REQUEST_PROJECT_PATH` | 11.6 | all | The path of the project of the merge request if [the pipelines are for merge requests](../merge_request_pipelines/index.md) (e.g. `namespace/awesome-project`) |
+| `CI_MERGE_REQUEST_PROJECT_URL` | 11.6 | all | The URL of the project of the merge request if [the pipelines are for merge requests](../merge_request_pipelines/index.md) (e.g. `http://192.168.10.15:3000/namespace/awesome-project`) |
+| `CI_MERGE_REQUEST_REF_PATH` | 11.6 | all | The ref path of the merge request if [the pipelines are for merge requests](../merge_request_pipelines/index.md). (e.g. `refs/merge-requests/1/head`) |
+| `CI_MERGE_REQUEST_SOURCE_BRANCH_NAME` | 11.6 | all | The source branch name of the merge request if [the pipelines are for merge requests](../merge_request_pipelines/index.md) |
+| `CI_MERGE_REQUEST_SOURCE_BRANCH_SHA` | 11.9 | all | The HEAD sha of the source branch of the merge request if [the pipelines are for merge requests](../merge_request_pipelines/index.md) |
+| `CI_MERGE_REQUEST_SOURCE_PROJECT_ID` | 11.6 | all | The ID of the source project of the merge request if [the pipelines are for merge requests](../merge_request_pipelines/index.md) |
+| `CI_MERGE_REQUEST_SOURCE_PROJECT_PATH` | 11.6 | all | The path of the source project of the merge request if [the pipelines are for merge requests](../merge_request_pipelines/index.md) |
+| `CI_MERGE_REQUEST_SOURCE_PROJECT_URL` | 11.6 | all | The URL of the source project of the merge request if [the pipelines are for merge requests](../merge_request_pipelines/index.md) |
+| `CI_MERGE_REQUEST_TARGET_BRANCH_NAME` | 11.6 | all | The target branch name of the merge request if [the pipelines are for merge requests](../merge_request_pipelines/index.md) |
+| `CI_MERGE_REQUEST_TARGET_BRANCH_SHA` | 11.9 | all | The HEAD sha of the target branch of the merge request if [the pipelines are for merge requests](../merge_request_pipelines/index.md) |
+| `CI_MERGE_REQUEST_TITLE` | 11.9 | all | The title of the merge request if [the pipelines are for merge requests](../merge_request_pipelines/index.md) |
+| `CI_MERGE_REQUEST_ASSIGNEES` | 11.9 | all | Comma-separated list of usernames of assignees for the merge request if [the pipelines are for merge requests](../merge_request_pipelines/index.md). [Multiple assignees for merge requests](https://gitlab.com/gitlab-org/gitlab-ee/issues/2004) is scheduled for a future release |
+| `CI_MERGE_REQUEST_MILESTONE` | 11.9 | all | The milestone title of the merge request if [the pipelines are for merge requests](../merge_request_pipelines/index.md) |
+| `CI_MERGE_REQUEST_LABELS` | 11.9 | all | Comma-separated label names of the merge request if [the pipelines are for merge requests](../merge_request_pipelines/index.md) |
+| `CI_NODE_INDEX` | 11.5 | all | Index of the job in the job set. If the job is not parallelized, this variable is not set. |
+| `CI_NODE_TOTAL` | 11.5 | all | Total number of instances of this job running in parallel. If the job is not parallelized, this variable is set to `1`. |
+| `CI_API_V4_URL` | 11.7 | all | The GitLab API v4 root URL |
+| `CI_PAGES_DOMAIN` | 11.8 | all | The configured domain that hosts GitLab Pages. |
+| `CI_PAGES_URL` | 11.8 | all | URL to GitLab Pages-built pages. Always belongs to a subdomain of `CI_PAGES_DOMAIN`. |
+| `CI_PIPELINE_ID` | 8.10 | all | The unique id of the current pipeline that GitLab CI uses internally |
+| `CI_PIPELINE_IID` | 11.0 | all | The unique id of the current pipeline scoped to project |
+| `CI_PIPELINE_SOURCE` | 10.0 | all | Indicates how the pipeline was triggered. Possible options are: `push`, `web`, `trigger`, `schedule`, `api`, and `pipeline`. For pipelines created before GitLab 9.5, this will show as `unknown` |
+| `CI_PIPELINE_TRIGGERED` | all | all | The flag to indicate that job was [triggered] |
+| `CI_PIPELINE_URL` | 11.1 | 0.5 | Pipeline details URL |
+| `CI_PROJECT_DIR` | all | all | The full path where the repository is cloned and where the job is run. If the GitLab Runner `builds_dir` parameter is set, this variable is set relative to the value of `builds_dir`. For more information, see [Advanced configuration](https://docs.gitlab.com/runner/configuration/advanced-configuration.html#the-runners-section) for GitLab Runner. |
+| `CI_PROJECT_ID` | all | all | The unique id of the current project that GitLab CI uses internally |
+| `CI_PROJECT_NAME` | 8.10 | 0.5 | The project name that is currently being built (actually it is project folder name) |
+| `CI_PROJECT_NAMESPACE` | 8.10 | 0.5 | The project namespace (username or groupname) that is currently being built |
+| `CI_PROJECT_PATH` | 8.10 | 0.5 | The namespace with project name |
+| `CI_PROJECT_PATH_SLUG` | 9.3 | all | `$CI_PROJECT_PATH` lowercased and with everything except `0-9` and `a-z` replaced with `-`. Use in URLs and domain names. |
+| `CI_PROJECT_URL` | 8.10 | 0.5 | The HTTP(S) address to access project |
+| `CI_PROJECT_VISIBILITY` | 10.3 | all | The project visibility (internal, private, public) |
+| `CI_REGISTRY` | 8.10 | 0.5 | If the Container Registry is enabled it returns the address of GitLab's Container Registry |
+| `CI_REGISTRY_IMAGE` | 8.10 | 0.5 | If the Container Registry is enabled for the project it returns the address of the registry tied to the specific project |
+| `CI_REGISTRY_PASSWORD` | 9.0 | all | The password to use to push containers to the GitLab Container Registry |
+| `CI_REGISTRY_USER` | 9.0 | all | The username to use to push containers to the GitLab Container Registry |
+| `CI_REPOSITORY_URL` | 9.0 | all | The URL to clone the Git repository |
+| `CI_RUNNER_DESCRIPTION` | 8.10 | 0.5 | The description of the runner as saved in GitLab |
+| `CI_RUNNER_EXECUTABLE_ARCH` | all | 10.6 | The OS/architecture of the GitLab Runner executable (note that this is not necessarily the same as the environment of the executor) |
+| `CI_RUNNER_ID` | 8.10 | 0.5 | The unique id of runner being used |
+| `CI_RUNNER_REVISION` | all | 10.6 | GitLab Runner revision that is executing the current job |
+| `CI_RUNNER_TAGS` | 8.10 | 0.5 | The defined runner tags |
+| `CI_RUNNER_VERSION` | all | 10.6 | GitLab Runner version that is executing the current job |
+| `CI_SERVER` | all | all | Mark that job is executed in CI environment |
+| `CI_SERVER_NAME` | all | all | The name of CI server that is used to coordinate jobs |
+| `CI_SERVER_REVISION` | all | all | GitLab revision that is used to schedule jobs |
+| `CI_SERVER_VERSION` | all | all | GitLab version that is used to schedule jobs |
+| `CI_SERVER_VERSION_MAJOR` | 11.4 | all | GitLab version major component |
+| `CI_SERVER_VERSION_MINOR` | 11.4 | all | GitLab version minor component |
+| `CI_SERVER_VERSION_PATCH` | 11.4 | all | GitLab version patch component |
+| `CI_SHARED_ENVIRONMENT` | all | 10.1 | Marks that the job is executed in a shared environment (something that is persisted across CI invocations like `shell` or `ssh` executor). If the environment is shared, it is set to true, otherwise it is not defined at all. |
+| `GET_SOURCES_ATTEMPTS` | 8.15 | 1.9 | Number of attempts to fetch sources running a job |
+| `GITLAB_CI` | all | all | Mark that job is executed in GitLab CI environment |
+| `GITLAB_USER_EMAIL` | 8.12 | all | The email of the user who started the job |
+| `GITLAB_USER_ID` | 8.12 | all | The id of the user who started the job |
+| `GITLAB_USER_LOGIN` | 10.0 | all | The login username of the user who started the job |
+| `GITLAB_USER_NAME` | 10.0 | all | The real name of the user who started the job |
+| `RESTORE_CACHE_ATTEMPTS` | 8.15 | 1.9 | Number of attempts to restore the cache running a job |
+| `GITLAB_FEATURES` | 10.6 | all | The comma separated list of licensed features available for your instance and plan |