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@aviflax
Last active Jul 1, 2021
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An example of a GitHub Actions job that builds a Docker container image and then pushes it to to the GitHub Packages container registry associated with the same repo, using regular `docker` commands
# An example of a GitHub Actions job that builds a Docker container image and then pushes
# it to to the GitHub Packages container registry associated with the same repo, using
# regular `docker` commands.
# Change these to whatever you want, of course. For example, you might want to only run this workflow for
# PRs. Personally I like to check the build on every push. That said, it’s probably not necessary to publish
# an artifact (container image) for every single push; I’m personally planning to add an `if` to the push
# step that skips the `docker push` if the GitHub event is `push`.
name: Push
on:
- push
# un-comment this line if you also want the workflow triggered for PRs.
# - pull_request
jobs:
build-and-push-container-image:
# Relevant docs: https://docs.github.com/en/actions/guides/publishing-docker-images#publishing-images-to-github-packages
runs-on: ubuntu-20.04
env:
REGISTRY: ghcr.io
steps:
- uses: actions/checkout@v2
- name: Set environment variables
run: |
echo "IMAGE_NAME=$(echo "$REGISTRY/$GITHUB_REPOSITORY" | tr '[:upper:]' '[:lower:]')" >> $GITHUB_ENV
echo "GIT_SHA=$(echo ${{ github.sha }} | cut -c1-7)" >> $GITHUB_ENV
echo "GIT_REF=$(git symbolic-ref -q --short HEAD || git describe --tags --exact-match)" >> $GITHUB_ENV
echo "IMAGE_TAG=${GIT_REF}-${GIT_SHA}" >> $GITHUB_ENV
- name: docker build
run: docker build --tag ${IMAGE_NAME}:${IMAGE_TAG} .
- name: docker login
run: echo ${{ secrets.GITHUB_TOKEN }} | docker login $REGISTRY -u "${{ github.actor }}" --password-stdin
- name: docker push
run: docker push ${IMAGE_NAME}:${IMAGE_TAG}
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