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https://github.com/woodpecker-ci/woodpecker.git
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227 lines
18 KiB
Markdown
227 lines
18 KiB
Markdown
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# Environment variables
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Woodpecker provides the ability to pass environment variables to individual pipeline steps. Note that these can't overwrite any existing, built-in variables. Example pipeline step with custom environment variables:
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```diff
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steps:
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- name: build
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image: golang
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+ environment:
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+ CGO: 0
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+ GOOS: linux
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+ GOARCH: amd64
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commands:
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- go build
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- go test
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```
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Please note that the environment section is not able to expand environment variables. If you need to expand variables they should be exported in the commands section.
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```diff
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steps:
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- name: build
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image: golang
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- environment:
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- - PATH=$PATH:/go
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commands:
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+ - export PATH=$PATH:/go
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- go build
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- go test
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```
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:::warning
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`${variable}` expressions are subject to pre-processing. If you do not want the pre-processor to evaluate your expression it must be escaped:
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:::
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```diff
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steps:
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- name: build
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image: golang
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commands:
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- - export PATH=${PATH}:/go
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+ - export PATH=$${PATH}:/go
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- go build
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- go test
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```
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## Built-in environment variables
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This is the reference list of all environment variables available to your pipeline containers. These are injected into your pipeline step and plugins containers, at runtime.
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| NAME | Description |
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| -------------------------------- | ------------------------------------------------------------------------------------------------------------------ |
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| `CI` | CI environment name (value: `woodpecker`) |
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| | **Repository** |
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| `CI_REPO` | repository full name `<owner>/<name>` |
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| `CI_REPO_OWNER` | repository owner |
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| `CI_REPO_NAME` | repository name |
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| `CI_REPO_REMOTE_ID` | repository remote ID, is the UID it has in the forge |
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| `CI_REPO_SCM` | repository SCM (git) |
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| `CI_REPO_URL` | repository web URL |
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| `CI_REPO_CLONE_URL` | repository clone URL |
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| `CI_REPO_CLONE_SSH_URL` | repository SSH clone URL |
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| `CI_REPO_DEFAULT_BRANCH` | repository default branch (main) |
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| `CI_REPO_PRIVATE` | repository is private |
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| `CI_REPO_TRUSTED` | repository is trusted |
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| | **Current Commit** |
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| `CI_COMMIT_SHA` | commit SHA |
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| `CI_COMMIT_REF` | commit ref |
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| `CI_COMMIT_REFSPEC` | commit ref spec |
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| `CI_COMMIT_BRANCH` | commit branch (equals target branch for pull requests) |
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| `CI_COMMIT_SOURCE_BRANCH` | commit source branch (empty if event is not `pull_request` or `pull_request_closed`) |
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| `CI_COMMIT_TARGET_BRANCH` | commit target branch (empty if event is not `pull_request` or `pull_request_closed`) |
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| `CI_COMMIT_TAG` | commit tag name (empty if event is not `tag`) |
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| `CI_COMMIT_PULL_REQUEST` | commit pull request number (empty if event is not `pull_request` or `pull_request_closed`) |
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| `CI_COMMIT_PULL_REQUEST_LABELS` | labels assigned to pull request (empty if event is not `pull_request` or `pull_request_closed`) |
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| `CI_COMMIT_MESSAGE` | commit message |
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| `CI_COMMIT_AUTHOR` | commit author username |
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| `CI_COMMIT_AUTHOR_EMAIL` | commit author email address |
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| `CI_COMMIT_AUTHOR_AVATAR` | commit author avatar |
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| `CI_COMMIT_PRERELEASE` | release is a pre-release (empty if event is not `release`) |
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| | **Current pipeline** |
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| `CI_PIPELINE_NUMBER` | pipeline number |
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| `CI_PIPELINE_PARENT` | number of parent pipeline |
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| `CI_PIPELINE_EVENT` | pipeline event (see [pipeline events](../20-usage/15-terminology/index.md#pipeline-events)) |
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| `CI_PIPELINE_URL` | link to the web UI for the pipeline |
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| `CI_PIPELINE_FORGE_URL` | link to the forge's web UI for the commit(s) or tag that triggered the pipeline |
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| `CI_PIPELINE_DEPLOY_TARGET` | pipeline deploy target for `deployment` events (i.e. production) |
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| `CI_PIPELINE_DEPLOY_TASK` | pipeline deploy task for `deployment` events (i.e. migration) |
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| `CI_PIPELINE_STATUS` | pipeline status (success, failure) |
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| `CI_PIPELINE_CREATED` | pipeline created UNIX timestamp |
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| `CI_PIPELINE_STARTED` | pipeline started UNIX timestamp |
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| `CI_PIPELINE_FINISHED` | pipeline finished UNIX timestamp |
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| `CI_PIPELINE_FILES` | changed files (empty if event is not `push` or `pull_request`), it is undefined if more than 500 files are touched |
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| | **Current workflow** |
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| `CI_WORKFLOW_NAME` | workflow name |
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| | **Current step** |
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| `CI_STEP_NAME` | step name |
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| `CI_STEP_NUMBER` | step number |
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| `CI_STEP_STATUS` | step status (success, failure) |
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| `CI_STEP_STARTED` | step started UNIX timestamp |
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| `CI_STEP_FINISHED` | step finished UNIX timestamp |
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| `CI_STEP_URL` | URL to step in UI |
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| | **Previous commit** |
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| `CI_PREV_COMMIT_SHA` | previous commit SHA |
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| `CI_PREV_COMMIT_REF` | previous commit ref |
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| `CI_PREV_COMMIT_REFSPEC` | previous commit ref spec |
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| `CI_PREV_COMMIT_BRANCH` | previous commit branch |
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| `CI_PREV_COMMIT_SOURCE_BRANCH` | previous commit source branch |
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| `CI_PREV_COMMIT_TARGET_BRANCH` | previous commit target branch |
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| `CI_PREV_COMMIT_URL` | previous commit link in forge |
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| `CI_PREV_COMMIT_MESSAGE` | previous commit message |
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| `CI_PREV_COMMIT_AUTHOR` | previous commit author username |
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| `CI_PREV_COMMIT_AUTHOR_EMAIL` | previous commit author email address |
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| `CI_PREV_COMMIT_AUTHOR_AVATAR` | previous commit author avatar |
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| | **Previous pipeline** |
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| `CI_PREV_PIPELINE_NUMBER` | previous pipeline number |
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| `CI_PREV_PIPELINE_PARENT` | previous pipeline number of parent pipeline |
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| `CI_PREV_PIPELINE_EVENT` | previous pipeline event (see [pipeline events](../20-usage/15-terminology/index.md#pipeline-events)) |
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| `CI_PREV_PIPELINE_URL` | previous pipeline link in CI |
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| `CI_PREV_PIPELINE_FORGE_URL` | previous pipeline link to event in forge |
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| `CI_PREV_PIPELINE_DEPLOY_TARGET` | previous pipeline deploy target for `deployment` events (ie production) |
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| `CI_PREV_PIPELINE_DEPLOY_TASK` | previous pipeline deploy task for `deployment` events (ie migration) |
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| `CI_PREV_PIPELINE_STATUS` | previous pipeline status (success, failure) |
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| `CI_PREV_PIPELINE_CREATED` | previous pipeline created UNIX timestamp |
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| `CI_PREV_PIPELINE_STARTED` | previous pipeline started UNIX timestamp |
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| `CI_PREV_PIPELINE_FINISHED` | previous pipeline finished UNIX timestamp |
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| |   |
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| `CI_WORKSPACE` | Path of the workspace where source code gets cloned to |
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| | **System** |
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| `CI_SYSTEM_NAME` | name of the CI system: `woodpecker` |
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| `CI_SYSTEM_URL` | link to CI system |
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| `CI_SYSTEM_HOST` | hostname of CI server |
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| `CI_SYSTEM_VERSION` | version of the server |
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| | **Forge** |
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| `CI_FORGE_TYPE` | name of forge (gitea, github, ...) |
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| `CI_FORGE_URL` | root URL of configured forge |
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| | **Internal** - Please don't use! |
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| `CI_SCRIPT` | Internal script path. Used to call pipeline step commands. |
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| `CI_NETRC_USERNAME` | Credentials for private repos to be able to clone data. (Only available for specific images) |
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| `CI_NETRC_PASSWORD` | Credentials for private repos to be able to clone data. (Only available for specific images) |
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| `CI_NETRC_MACHINE` | Credentials for private repos to be able to clone data. (Only available for specific images) |
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## Global environment variables
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If you want specific environment variables to be available in all of your pipelines use the `WOODPECKER_ENVIRONMENT` setting on the Woodpecker server. Note that these can't overwrite any existing, built-in variables.
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```ini
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WOODPECKER_ENVIRONMENT=first_var:value1,second_var:value2
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```
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These can be used, for example, to manage the image tag used by multiple projects.
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```ini
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WOODPECKER_ENVIRONMENT=GOLANG_VERSION:1.18
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```
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```diff
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steps:
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- name: build
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- image: golang:1.18
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+ image: golang:${GOLANG_VERSION}
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commands:
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- [...]
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```
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## String Substitution
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Woodpecker provides the ability to substitute environment variables at runtime. This gives us the ability to use dynamic settings, commands and filters in our pipeline configuration.
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Example commit substitution:
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```diff
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steps:
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- name: docker
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image: plugins/docker
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settings:
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+ tags: ${CI_COMMIT_SHA}
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```
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Example tag substitution:
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```diff
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steps:
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- name: docker
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image: plugins/docker
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settings:
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+ tags: ${CI_COMMIT_TAG}
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```
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## String Operations
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Woodpecker also emulates bash string operations. This gives us the ability to manipulate the strings prior to substitution. Example use cases might include substring and stripping prefix or suffix values.
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| OPERATION | DESCRIPTION |
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| ------------------ | ------------------------------------------------ |
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| `${param}` | parameter substitution |
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| `${param,}` | parameter substitution with lowercase first char |
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| `${param,,}` | parameter substitution with lowercase |
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| `${param^}` | parameter substitution with uppercase first char |
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| `${param^^}` | parameter substitution with uppercase |
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| `${param:pos}` | parameter substitution with substring |
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| `${param:pos:len}` | parameter substitution with substring and length |
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| `${param=default}` | parameter substitution with default |
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| `${param##prefix}` | parameter substitution with prefix removal |
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| `${param%%suffix}` | parameter substitution with suffix removal |
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| `${param/old/new}` | parameter substitution with find and replace |
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Example variable substitution with substring:
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```diff
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steps:
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- name: docker
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image: plugins/docker
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settings:
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+ tags: ${CI_COMMIT_SHA:0:8}
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```
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Example variable substitution strips `v` prefix from `v.1.0.0`:
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```diff
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steps:
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- name: docker
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image: plugins/docker
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settings:
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+ tags: ${CI_COMMIT_TAG##v}
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```
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