Update docker-build.yml

Author: Brandon

.github/workflows/docker-build.yml

@@ -1,16 +1,29 @@
-name: Build Docker Image
+name: Build and Push Docker
+
+permissions:
+  contents: read
+  packages: write
 
 on:
   push:
-    branches: [ master ]
-  pull_request:
-    branches: [ master ]
+    branches: [ "main" ]
 
 jobs:
-
   build:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
-    - name: Build the Docker image
-      run: docker build . --file Dockerfile --tag ffmpeg:$(date +%s)
+      - name: Checkout repository
+        uses: actions/checkout@v4
+        
+      - name: Log in to GitHub Container Registry
+        uses: docker/login-action@v2
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+      
+      - name: Build the Docker image
+        run: docker build . --tag ghcr.io/${{ github.repository }}/docker-ffmpeg:latest
+
+      - name: Push Docker image
+        run: docker push ghcr.io/${{ github.repository }}/docker-ffmpeg:latest