ci: push docker images via crane with chunked uploads

.github/workflows/nightly.yml

@@ -256,24 +256,33 @@ jobs:
         tags: |
           type=raw,value=nightly
 
-    - name: Login to Forgejo registry
-      uses: https://github.com/docker/login-action@v3
-      with:
-        registry: git.huckle.dev
-        username: ${{ github.actor }}
-        password: ${{ secrets.REGISTRY_TOKEN }}
-
-    - name: Build and push image
+    - name: Build image to OCI tarball
       uses: https://github.com/docker/build-push-action@v6
       with:
         context: .
         file: docker/dedicated-server/Dockerfile
-        push: true
+        outputs: type=oci,dest=/tmp/image-${{ matrix.variant }}.tar
         tags: ${{ steps.meta.outputs.tags }}
         labels: ${{ steps.meta.outputs.labels }}
         build-args: |
           MC_RUNTIME_DIR=runtime
 
+    - name: Install crane
+      run: |
+        set -euo pipefail
+        VER=v0.20.2
+        curl -fsSL "https://github.com/google/go-containerregistry/releases/download/${VER}/go-containerregistry_Linux_x86_64.tar.gz" \
+          | tar -xz -C /usr/local/bin crane
+        crane version
+
+    - name: Push image with chunked upload
+      env:
+        REGISTRY_TOKEN: ${{ secrets.REGISTRY_TOKEN }}
+      run: |
+        set -euo pipefail
+        echo "$REGISTRY_TOKEN" | crane auth login git.huckle.dev -u "${{ github.actor }}" --password-stdin
+        crane push --chunk-size 52428800 /tmp/image-${{ matrix.variant }}.tar ${{ steps.meta.outputs.tags }}
+
   release-server:
     name: Release Server
     needs: build-server