Update Docker build workflow for GitHub Actions

Author: shuesken

.github/workflows/docker-build.yml

@@ -1,24 +1,31 @@
 name: build
 on:
-  push:
+  workflow_dispatch:
 jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
-        with:
-          fetch-depth: 0
-      - uses: docker/login-action@v1
-        with:
-          registry: ghcr.io
-          username: ${{ github.repository_owner }}
-          password: ${{ secrets.GITHUB_TOKEN }}
-      - uses: docker/login-action@v1
-        if: 0
-        with:
-          username: voidic
-          password: ${{ secrets.DOCKER_HUB_TOKEN }}
-      - uses: docker/setup-qemu-action@v1
-      - uses: docker/setup-buildx-action@v1
-      - name: Build the Docker image
-        run: docker buildx build -t ghcr.io/${{ github.repository_owner }}/strfry:latest --platform linux/amd64 --platform linux/arm64 --push .
+    # Step 1: Checkout the repository code
+    - name: Checkout repository
+      uses: actions/checkout@v3
+
+    # Step 2: Set up Docker Buildx (for multi-platform builds if needed)
+    - name: Set up Docker Buildx
+      uses: docker/setup-buildx-action@v2
+
+    # Step 3: Log in to GitHub Container Registry
+    - name: Log in to GHCR
+      uses: docker/login-action@v2
+      with:
+        username: ${{ github.actor }}
+        password: ${{ secrets.GITHUB_TOKEN }}
+
+    # Step 4: Build the Docker image
+    - name: Build Docker image
+      run: |
+        docker build -t ghcr.io/${{ github.repository_owner }}/strfry:latest .
+
+    # Step 5: Push the Docker image to GHCR
+    - name: Push Docker image to GHCR
+      run: |
+        docker push ghcr.io/${{ github.repository_owner }}/strfry:latest