feat: docker binary cache

.github/workflows/release.yaml

@@ -39,6 +39,7 @@ jobs:
   # https://docs.docker.com/build/ci/github-actions/manage-tags-labels/
   package:
     runs-on: ubuntu-latest
+    needs: release # Wait for binary cache to propagate
     steps:
       - name: Docker meta
         id: meta

Dockerfile

@@ -9,6 +9,7 @@ WORKDIR /tmp/build
 RUN nix \
     --extra-experimental-features "nix-command flakes" \
     --option filter-syscalls false \
+    --accept-flake-config \
     build
 
 # Copy the Nix store closure into a directory. The Nix store closure is the