Login to ghcr alongside with Docker Hub

Author: taoky

.github/workflows/build.yml

@@ -34,8 +34,8 @@ jobs:
         run: ./build.sh
         env:
           IMAGE_NAME: ${{ matrix.IMAGE_NAME }}
-          DOCKER_USER: ${{ secrets.DOCKER_USER }}
-          DOCKER_PASS: ${{ secrets.DOCKER_PASS }}
+          DHDOCKER_USER: ${{ secrets.DOCKER_USER }}
+          DHDOCKER_PASS: ${{ secrets.DOCKER_PASS }}
           COMMIT_FROM: ${{ github.event.before }}
           COMMIT_TO: ${{ github.event.after }}
           GITHUB_EVENT: ${{ github.event_name }}

build.sh

@@ -7,6 +7,15 @@ has_modified(){
 
 script=build-${IMAGE_NAME}.sh
 if has_modified $script || [[ $GITHUB_EVENT == "schedule" ]] || true ; then
-    docker login -u "$DOCKER_USER" -p "$DOCKER_PASS"
+    # Docker Hub
+    if [ -n "$DHDOCKER_USER" ]; then
+        docker login -u "$DHDOCKER_USER" -p "$DHDOCKER_PASS"
+        echo "Logged in to Docker Hub"
+    fi
+    # GitHub Container Registry
+    if [ -n "$GITHUB_TOKEN" ]; then
+        echo $GITHUB_TOKEN | docker login ghcr.io -u $GITHUB_ACTOR --password-stdin
+        echo "Logged in to GitHub Container Registry"
+    fi
     . $script
 fi