👷‍♂️ Upgrade the Docker push actions.

Author: coderanger

.github/workflows/main.yml

@@ -50,6 +50,8 @@ jobs:
     - test
     - lint
     if: github.event_name != 'pull_request'
+    permissions:
+      packages: write
 
     steps:
     - uses: actions/checkout@v2
@@ -74,14 +76,14 @@ jobs:
         echo ::set-output name=created::$(date -u +'%Y-%m-%dT%H:%M:%SZ')
     - name: Set up Docker Buildx
       uses: docker/setup-buildx-action@v1
-    - name: Login to Github Container Registry
-      uses: docker/login-action@v1
+    - name: Login to GitHub Container Registry
+      uses: docker/login-action@v3
       with:
-          registry: ghcr.io
-          username: ${{ github.repository_owner }}
-          password: ${{ secrets.GHCR_PAT }}
+        registry: ghcr.io
+        username: ${{ github.actor }}
+        password: ${{ secrets.GITHUB_TOKEN }}
     - name: Build and push
-      uses: docker/build-push-action@v2
+      uses: docker/build-push-action@v4
       with:
         context: .
         file: ./Dockerfile