Pass common CI vars into builder as build args #13
Description
Convert these Codebuild specific vars into more standard names and pass in as build args to the docker image
| Purpose | CodeBuild Var | Neutral / “Industry-standard” Name | Why |
|---|---|---|---|
| Source ref (branch or tag) | CODEBUILD_WEBHOOK_HEAD_REF | CI_COMMIT_REF | GitLab CI, Drone, Buildkite use this. GitHub Actions has GITHUB_REF which is similar. |
| Commit SHA | CODEBUILD_RESOLVED_SOURCE_VERSION | CI_COMMIT_SHA | Widely adopted (CI_COMMIT_SHA in GitLab, GITHUB_SHA in Actions, DRONE_COMMIT_SHA, etc.). |
| Build start time | CODEBUILD_START_TIME | CI_BUILD_STARTED_AT | Less standardized, but GitLab/Drone use CI_PIPELINE_CREATED_AT or DRONE_BUILD_STARTED. The CI_BUILD_* prefix keeps it consistent. |
| Repository URL | CODEBUILD_SOURCE_REPO_URL | CI_REPOSITORY_URL | Common in GitLab and others (CI_REPOSITORY_URL gives the clone URL). |
Note that CODEBUILD_WEBHOOK_HEAD_REF is only set on builds triggered by a webhook. For a manual build, we should use the the branch it pulled from. It may make more sense to use CODEBUILD_SOURCE_VERSION.
Docs: https://docs.aws.amazon.com/codebuild/latest/userguide/build-env-ref-env-vars.html