Plugin: updater-docker

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Updates a version argument inside a Dockerfile. It is useful when your container build embeds the application version through a build argument.

Installation

go install github.com/SemRels/updater-docker@latest

Each plugin is a standalone Go binary. Keep it on your PATH or reference it with path: in .semrel.yaml. If you keep secrets in a .env file, load them with semrel --env-file .env release.

Configuration

version: 1
plugins:
  - name: updater-docker
    path: updater-docker
    args:
      file: Dockerfile
      arg_name: VERSION

Environment Variables

Name	Required	Default	Description
`SEMREL_PLUGIN_FILE`	no	`Dockerfile`	Dockerfile to update.
`SEMREL_PLUGIN_ARG_NAME`	no	`VERSION`	Docker build argument that stores the release version.

Release Context Variables

SEMREL_NEXT_VERSION
SEMREL_CURRENT_VERSION
SEMREL_TAG_NAME
SEMREL_DRY_RUN

Behavior

For a 1.4.0 release, the updater can rewrite ARG VERSION=1.3.2 to ARG VERSION=1.4.0 in the target Dockerfile.

Source

SemRels/updater-docker