@semantic-release-plus/docker

@semantic-release-plus/docker

A semantic-release-plus or semantic-release plugin for publishing a docker images to a docker registry.

Step	Description
verifyConditions	Verify that all needed configuration and DOCKER_USERNAME and DOCKER_PASSWORD environment variables are present and logs into the Docker registry unless skipped.
addChannel	Tag an existing image with a new channel. Run only if there are releases that have been merged from a higher branch but not added on the channel of the current branch.
publish	Tag the image specified by name as {registry}/{name}:{version} and {registry}/{name}:{channel} (based on configuration) and push it to the Docker registry.

Install

$ npm install @semantic-release/npm -D

Usage

The plugin can be configured in the semantic-release-plus configuration file:

{
  "release": {
    "plugins": [
      [
        "@semantic-release-plus/docker",
        {
          "name": "my-cool-docker-app"
        }
      ]
    ]
  }
}

Configuration

Option	Description	Type	Default
name	Required config associated with the tag name assigned to the image during build docker build -t name.	string
registry	The docker registry to login and push images to, this will be pre-pended to the name field when tagging	string	docker.io
publishChannelTag	Will publish a channel (dist) tag such as latest, next, beta, alpha, 1, and 1.1, that always points to the most recent release on the channel. 1, 1.1 tags will only be created on maintenance branches. See Publishing maintenance releases	boolean	true
skipLogin	Skips logging in to docker hub in the verifyConditions step, used if you log in separately in your CI job. Removes requirement for DOCKER_USERNAME and DOCKER_PASSWORD environment variables	boolean	false

Example github action publishing to ghcr.io

The following is an example github action configuration, the source repo can be found at https://github.com/JoA-MoS/srp-docker-example

name: CI

on:
  push:
    branches:
      - master
      - next
      - beta
      - alpha
      - '*.x'
  pull_request:
    types:
      - opened
      - synchronize

jobs:
  build_release:
    runs-on: ubuntu-latest
    steps:
      - name: Build
        uses: actions/checkout@v2
        with:
          fetch-depth: 0
      - run: docker build --tag joa-mos/srp-docker-example .
      - name: Release
        uses: actions/setup-node@v2
        with:
          cache: npm
      - run: npm ci
      - run: npx semantic-release-plus
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          DOCKER_USERNAME: joa-mos
          DOCKER_PASSWORD: ${{ secrets.DOCKER_PASSWORD }}

Example .travis.yml

jobs:
  include:
    - stage: release
      language: node_js
      node_js: '8'
      services:
        - docker
      script:
        - docker build -t username/imagename .
        - npm run semantic-release

stages:
  - test
  - name: release
    if: branch = master AND type = push AND fork = false

branches:
  except:
    - /^v\d+\.\d+\.\d+$/

Circle CI Example .config.yml

version: 2
jobs:
  release:
    docker:
      - image: circleci/node:8
    steps:
      - setup_remote_docker:
          docker_layer_caching: true
      - run:
          name: release
          command: |
            docker build -t username/imagename .
            npm run semantic-release

workflows:
  version: 2
  pipeline:
    jobs:
      - test
      - release:
          requires:
            - test
          filters:
            branches:
              only: master

Note that setup_remote_docker step is required for this plugin to work in Circle CI environment

How to keep new version in package.json inside docker image?

It is best to let semantic-release focus on releasing your built artifact and not extend semantic-release to also do the build. I recommend using semantic-release-plus to get the next version without creating a tag then using that durning your build process. An example of this can be found in the semantic-release-plus Expected next version recipe.