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Update development.md #9

Update development.md

Update development.md #9

name: Publish Docker Image
on:
push:
branches: [ main ]
workflow_dispatch:
env:
# Last fragment of identifier of the docker image
IMAGE_NAME: ${{ github.repository }}
# Group identifier of the docker image, typically ${{ github.repository_owner }} or ${{ github.repository }}
IMAGE_GROUP_NAME: ${{ github.repository_owner }}
MAIN_BRANCH_NAME: main
jobs:
build-and-publish:
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v2
- name: Build docker image
run: docker build . --file Dockerfile --tag $IMAGE_NAME
- name: Log in to the Container registry
run: echo "${{ github.token }}" | docker login docker.pkg.github.com -u ${{ github.actor }} --password-stdin
- name: Push image
run: |
IMAGE_ID=docker.pkg.github.com/$IMAGE_GROUP_NAME/$IMAGE_NAME
# Change all uppercase to lowercase
IMAGE_ID=$(echo $IMAGE_ID | tr '[A-Z]' '[a-z]')
# Get branch name if merge to a branch
GIT_BRANCH_NAME=$(echo "${{ github.ref }}" | grep 'refs/heads/.*' | cut -d"/" -f 3)
# Get pull request id (e.g. "pr-123" from "/pulls/123")
PULL_REQUEST_ID=$(echo "${{ github.event.pull_request.number }}" | grep -v "^$" | sed 's/^/pr-/')
# Get tag id while strip "v" prefix (e.g. "1.2" from "v1.2")
TAG_ID=$(echo "${{ github.ref }}" | grep 'refs/tags/.*' | cut -d"/" -f 3 | sed -e 's/^v//')
# Version is either "git branch name"/"pull request id"/"tag id"
VERSION=${GIT_BRANCH_NAME:-${PULL_REQUEST_ID:-${TAG_ID}}}
# Use Docker `latest` tag convention
[ "$VERSION" == $MAIN_BRANCH_NAME ] && VERSION=latest
echo IMAGE_ID=$IMAGE_ID
echo VERSION=$VERSION
docker tag $IMAGE_NAME $IMAGE_ID:$VERSION
docker push $IMAGE_ID:$VERSION