build-rp-nginx-docker-image.yml

---
name: Build Reverse Proxy NginX Docker Image
run-name: Build Reverse Proxy NginX Docker Image by @${{ github.actor }}

permissions:
  id-token: write
  contents: write

on:
  workflow_dispatch:

jobs:
# ------------------------------------------------------------------------------
# set version
# ------------------------------------------------------------------------------
  build-image:
    name: prepare docker image
    runs-on: ubuntu-latest
    steps:
      - name: set vars
        id: variables
        run: |
          echo "version_no=$(date +%y%m%d).${{ github.run_number }}" >> "$GITHUB_OUTPUT"
          prep_image_id=$(echo "ghcr.io/${{ github.repository_owner }}/web-rp-nginx" | tr '[A-Z]' '[a-z]')
          echo "image_id=$prep_image_id" >> "$GITHUB_OUTPUT"

      - uses: actions/checkout@v4

      - name: log in to registry
        run: echo "${{ secrets.GH_TOKEN }}" | docker login ghcr.io --username ${{ github.actor }} --password-stdin
        shell: bash

      - name: build and push image
        run: |
          echo ${{ steps.variables.outputs.image_id }}
          docker build \
            --tag ${{ steps.variables.outputs.image_id }}:${{ steps.variables.outputs.version_no }} \
            --build-arg "BUILD_VERSION=${{ steps.variables.outputs.version_no }}" \
            --platform linux/amd64 \
            --no-cache \
            --file ./docker-builds/rp-nginx/docker-alpine-rp-nginx \
            .
          docker push ${{ steps.variables.outputs.image_id }}:${{ steps.variables.outputs.version_no }}
        shell: bash
      - name: tag latest
        run: |
          docker tag ${{ steps.variables.outputs.image_id }}:${{ steps.variables.outputs.version_no }} ${{ steps.variables.outputs.image_id }}:latest
          docker push ${{ steps.variables.outputs.image_id }}:latest
        shell: bash

...