Add an explicit cache restore

.gitlab-ci-build.yml.in

@@ -40,13 +40,7 @@ stages:
       ${EXCEPT}
       sources
   before_script:
-    - packer init sources
-    - echo $COMMAND
-    - mc alias set storage "http://localhost:9000" root "$MINIO_SECRET"
-    - mc ls storage/isos/cache
-    - file=$(echo var.iso.url | packer console -var-file="${distro}" -config-type=hcl2 sources/)
-    - mkdir cache
-    - mc get "storage/isos/$file" "$file"
+    - nix run ".#cache-restore"
   script:
     - ls -l cache/
     - echo $COMMAND > build.sh

.gitlab-ci.yml

@@ -72,6 +72,7 @@ downloads:
       paths:
         - ./packer_config/
   script:
+    - nix run ".#cache-restore"
     - nix run ".#cache"
 
 trigger:

cache-restore.sh

@@ -0,0 +1,5 @@
+mc alias set storage "$STORAGE_URL" root "$MINIO_SECRET"
+
+for f in $(mc ls --json storage/isos/cache | jq '.key' | tr -d '"'); do
+	mc get -q "storage/isos/cache/$f" "./cache/$f"
+done

flake.nix

@@ -53,6 +53,15 @@
 					];
 					text = builtins.readFile ./cache.sh;
 				};
+				cache-restore = pkgs.writeShellApplication {
+					name = "cache-restore";
+					runtimeInputs = with pkgs; [
+						jq
+						minio-client
+						packer
+					];
+					text = builtins.readFile ./cache-restore.sh;
+				};
 			};
 
 			# https://numtide.github.io/treefmt/