added docker image automated builds

.github/workflows/docker-image.yml

@@ -0,0 +1,52 @@
+name: Build and Push Docker Images
+
+on:
+  push:
+    branches: [ main ]
+
+jobs:
+  build-and-push:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v3
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v2
+
+      # Login to Docker Hub
+      - name: Log in to Docker Hub
+        uses: docker/login-action@v2
+        with:
+          registry: docker.io
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_TOKEN }}
+
+      # Login to GitHub Container Registry
+      - name: Log in to GitHub Container Registry
+        uses: docker/login-action@v2
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GHCR_TOKEN }}
+
+      - name: Extract version number
+        id: vars
+        run: |
+          VERSION=${{ github.run_number }}
+          echo "VERSION=$VERSION" >> $GITHUB_ENV
+
+      - name: Build and push Docker images to Docker Hub and GHCR
+        uses: docker/build-push-action@v4
+        with:
+          context: .
+          push: true
+          tags: |
+            docker.io/tbosk/mkfd:latest
+            docker.io/tbosk/mkfd:${{ env.VERSION }}
+            ghcr.io/tbosak/mkfd:latest
+            ghcr.io/tbosak/mkfd:${{ env.VERSION }}