Dockerfile

@@ -1,5 +1,7 @@
 FROM nixos/nix
 
+RUN mv /nix/store/ /nix/store-upstream/
+
 # installed from alpine to not pollute nix store
 RUN apk add --no-cache \
         git \
@@ -12,6 +14,6 @@ RUN wget -O- https://github.com/drone-runners/drone-runner-exec/releases/downloa
 COPY entrypoint.sh /
 
 ENTRYPOINT ["/entrypoint.sh"]
-ENV DRONE_RUNNER_ENVIRON=NIX_PATH:nixpkgs=/nix/var/nix/profiles/per-user/root/channels/nixpkgs,NIX_STORE:/nix/store-ci
+ENV DRONE_RUNNER_ENVIRON=NIX_PATH:nixpkgs=/nix/var/nix/profiles/per-user/root/channels/nixpkgs
 
 EXPOSE 3000

entrypoint.sh

@@ -1,8 +1,8 @@
 #!/bin/sh
-echo "Bootstrapping initial nix store…"
-mkdir -p /nix/store-ci
-chmod 1775 /nix/store-ci
-chgrp nixbld /nix/store-ci
-rsync -a /nix/store/./ /nix/store-ci
-NIX_STORE=/nix/store-ci nix-daemon &
+echo "Restoring upstream nix store…"
+mkdir -p /nix/store
+chmod 1775 /nix/store
+chgrp nixbld /nix/store
+rsync -a /nix/store-upstream/./ /nix/store
+nix-daemon &
 exec su-exec nobody:nogroup /usr/local/bin/drone-runner-exec