[gha] test auth changes

.github/workflows/docker.yml

@@ -2,27 +2,44 @@ name: Build Docker containers
 
 on: push
 
+env:
+  IMAGE_NAME: i2pd
+
 jobs:
   docker:
     name: For ${{ matrix.platform }}
     runs-on: ubuntu-latest
+    permissions:
+      packages: write
+      contents: read
+
     strategy:
-      fail-fast: true
+      fail-fast: false
       matrix:
         platform: ['linux/amd64', 'linux/386', 'linux/arm64', 'linux/arm/v7']
+
     steps:
       - name: Checkout
         uses: actions/checkout@v2
+
       - name: Set up QEMU
         uses: docker/setup-qemu-action@v1
+
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v1
+
       - name: Login to DockerHub
         uses: docker/login-action@v1 
         with:
           registry: ghcr.io
-          username: ${{ github.repository_owner }}
+          username: ${{ github.actor }}
           password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Push image
+        run: |
+          IMAGE_ID=ghcr.io/${{ github.repository_owner }}/$IMAGE_NAME
+          IMAGE_ID=$(echo $IMAGE_ID | tr '[A-Z]' '[a-z]')
+
       - name: Build and push
         uses: docker/build-push-action@v2
         with:
@@ -30,4 +47,4 @@ jobs:
           file: ./contrib/docker/Dockerfile
           platforms: ${{ matrix.platform }}
           push: true
-          tags: ghcr.io/purplei2p/i2pd:latest
+          tags: $IMAGE_ID:latest