Also push container to GHCR

Author: greboid

.github/workflows/docker-publish.yml

@@ -7,8 +7,7 @@ on:
     tags:
       - v*
 env:
-  IMAGE_NAME: mdbot/wiki
-  IMAGE_MIRROR: repo.treescale.com/greboid/wiki
+  IMAGE_NAME: wiki
 
 jobs:
   push:
@@ -17,33 +16,39 @@ jobs:
     steps:
       - uses: actions/checkout@v2
 
-      - name: Log into registry
+      - name: Log into registry (docker hub)
         run: echo "${{ secrets.DOCKER_HUB_TOKEN }}" | docker login -u "${{ secrets.DOCKER_HUB_USER }}" --password-stdin
 
       - name: Build image
         run: docker build . --tag $IMAGE_NAME
 
-      - name: Push image
+      - name: Push image (docker hub)
         run: |     
+          IMAGE_ID=${{ github.repository_owner }}/$IMAGE_NAME
+          
           # Strip git ref prefix from version
           VERSION=$(echo "${{ github.ref }}" | sed -e 's,.*/\(.*\),\1,')
           # Strip "v" prefix from tag name
           [[ "${{ github.ref }}" == "refs/tags/"* ]] && VERSION=$(echo $VERSION | sed -e 's/^v//')
           # Use Docker `latest` tag convention
           [ "$VERSION" == "master" ] && VERSION=latest
-          docker tag $IMAGE_NAME $IMAGE_NAME:$VERSION
-          docker push $IMAGE_NAME:$VERSION
+          docker tag $IMAGE_NAME $IMAGE_ID:$VERSION
+          docker push $IMAGE_ID:$VERSION
           
-      - name: Log into registry (mirror)
-        run: echo "${{ secrets.REG_HUB_TOKEN }}" | docker login repo.treescale.com -u "${{ secrets.REG_HUB_USER }}" --password-stdin
+      - name: Log into registry (ghcr.io)
+        run: echo "${{ secrets.GITHUB_TOKEN }}" | docker login ghcr.io -u ${{ github.actor }} --password-stdin
 
-      - name: Push image (mirror)
-        run: |     
+      - name: Push image (ghcr.io)
+        run: |
+          IMAGE_ID=ghcr.io/${{ github.repository_owner }}/$IMAGE_NAME
+
+          # Change all uppercase to lowercase
+          IMAGE_ID=$(echo $IMAGE_ID | tr '[A-Z]' '[a-z]')
           # Strip git ref prefix from version
           VERSION=$(echo "${{ github.ref }}" | sed -e 's,.*/\(.*\),\1,')
           # Strip "v" prefix from tag name
           [[ "${{ github.ref }}" == "refs/tags/"* ]] && VERSION=$(echo $VERSION | sed -e 's/^v//')
           # Use Docker `latest` tag convention
           [ "$VERSION" == "master" ] && VERSION=latest
-          docker tag $IMAGE_NAME IMAGE_MIRROR:$VERSION
-          docker push IMAGE_MIRROR:$VERSION
+          docker tag $IMAGE_NAME $IMAGE_ID:$VERSION
+          docker push $IMAGE_ID:$VERSION