Update docker-cd to push to ghcr

Author: PythonGermany

.github/workflows/docker-cd.yml

@@ -14,30 +14,21 @@ on:
       - 'v[0-9]+.[0-9]+.[0-9]+*'
 
 env:
-  # Use docker.io for Docker Hub if empty
-  REGISTRY: docker.io
-  # github.repository as <account>/<repo>
-  IMAGE_NAME: pythongermany/webserv
+  REGISTRY: ghcr.io
+  IMAGE_NAME: webserv
 
 jobs:
   docker-cd:
     runs-on: ubuntu-latest
     permissions:
       contents: read
       packages: write
-      # This is used to complete the identity challenge
-      # with sigstore/fulcio when running outside of PRs.
+      attestations: write
       id-token: write
 
     steps:
       - name: Checkout repository
         uses: actions/checkout@v4
-        
-      # Set up BuildKit Docker container builder to be able to build
-      # multi-platform images and export cache
-      # https://github.com/docker/setup-buildx-action
-      - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v3
 
       # Login against a Docker registry except on PR
       # https://github.com/docker/login-action
@@ -46,16 +37,22 @@ jobs:
         uses: docker/login-action@v3
         with:
           registry: ${{ env.REGISTRY }}
-          username: ${{ vars.DOCKERHUB_USERNAME }}
-          password: ${{ secrets.DOCKERHUB_TOKEN }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+        
+      # Set up BuildKit Docker container builder to be able to build
+      # multi-platform images and export cache
+      # https://github.com/docker/setup-buildx-action
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
 
       # Extract metadata (tags, labels) for Docker
       # https://github.com/docker/metadata-action
-      - name: Extract Docker metadata
+      - name: Extract metadata (tags, labels) for Docker
         id: meta
         uses: docker/metadata-action@v5
         with:
-          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
+          images: ${{ env.REGISTRY }}/${{ github.actor }}/${{ env.IMAGE_NAME }}
 
       # Build and push Docker image with Buildx (don't push on PR)
       # https://github.com/docker/build-push-action