Use cache for go files

.gitlab-ci.yml

@@ -2,10 +2,16 @@ stages:
   - build
   - deploy
 
+cache:
+  paths:
+    - .go
+
 build:
   stage: build
   script:
     - ./build-docker.sh docker2.touhou.fm
+  after_script:
+    - chmod u+rwx .go -R
   artifacts:
     paths:
       - playlist.version.auto.tfvars

build-docker.sh

@@ -14,6 +14,7 @@ EOC
 echo "Building version: $VERSION"
 
 mkdir -p .redo
+mkdir -p .go
 mkdir -p target
 
 BUILD_DIR=/build