Compress resulting app containers with zstd (#263)

Author: frenck

.github/workflows/app-deploy.yaml

@@ -134,7 +134,7 @@ jobs:
       - name: 🚀 Build and push
         uses: docker/build-push-action@263435318d21b8e681c14492fe198d362a7d2c83 # v6.18.0
         with:
-          push: true
+          outputs: type=image,push=true,compression=zstd,compression-level=9,force-compression=true,oci-mediatypes=true
           # yamllint disable rule:line-length
           tags: |
             ghcr.io/${{ github.repository_owner }}/${{ needs.information.outputs.slug }}/${{ matrix.architecture }}:${{ needs.information.outputs.environment }}

.github/workflows/base-deploy.yaml

@@ -98,7 +98,7 @@ jobs:
       - name: 🚀 Build and push
         uses: docker/build-push-action@263435318d21b8e681c14492fe198d362a7d2c83 # v6.18.0
         with:
-          push: true
+          outputs: type=image,push=true,compression=zstd,compression-level=9,force-compression=true,oci-mediatypes=true
           # yamllint disable rule:line-length
           tags: |
             ghcr.io/${{ github.repository_owner }}/${{ needs.information.outputs.slug }}/${{ matrix.architecture }}:${{ needs.information.outputs.environment }}