actions: switch to publish docker image to github packages

docker integration has gotten too finicky and not worth the trouble

.github/workflows/docker.yml

@@ -4,28 +4,37 @@ on:
     - 'main'
     tags:
     - '*'
-name: docker-publish-tags
+
+name: Publish Docker image
+
+env:
+  REGISTRY: ghcr.io
+  IMAGE_NAME: ${{ github.repository }}
 
 jobs:
-  docker:
+  build-and-push-image:
     runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
 
     steps:
     - uses: actions/checkout@v2
 
-    - uses: docker/login-action@v1
+    - uses: docker/login-action@f054a8b539a109f9f41c372932f1ae047eff08c9 # v1.10.0
       with:
-        username: ${{ secrets.DOCKER_USERNAME }}
-        password: ${{ secrets.DOCKER_PASSWORD }}
+        registry: ${{ env.REGISTRY }}
+        username: ${{ github.actor }}
+        password: ${{ secrets.GITHUB_TOKEN }}
 
-    - uses: docker/metadata-action@v3
+    - uses: docker/metadata-action@98669ae865ea3cffbcbaa878cf57c20bbf1c6c38
       id: meta
       with:
-        images: willnorris/imageproxy
+        images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
 
-    - uses: docker/build-push-action@v1
+    - uses: docker/build-push-action@ad44023a93711e3deb337508980b4b5e9bcdc5dc
       with:
         context: .
         push: true
-        tags: ${{ steps.meta.output.tags }}
-        labels: ${{ steps.meta.output.labels }}
+        tags: ${{ steps.meta.outputs.tags }}
+        labels: ${{ steps.meta.outputs.labels }}