Use github secrets

Author: Eeems

.github/workflows/build.yml

@@ -16,8 +16,8 @@ jobs:
         uses: docker/login-action@v2
         with:
           registry: ghcr.io
-          username: matteodelabre
-          password: ${{ secrets.CR_PAT }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
       - name: Build and publish images
         run: |
           ./scripts/build -p .