Improve caching

.gitlab-ci.yml

@@ -3,6 +3,19 @@ stages:
 
 variables:
   DOCKER_HOST: tcp://docker:2375/
+  GOCACHE: "${CI_PROJECT_DIR}/_go/cache"
+
+before_script:
+  - mkdir -p ${CI_PROJECT_DIR}/_go/{pkg,bin,cache}
+  - rm -rf /go/pkg
+  - ln -s ${CI_PROJECT_DIR}/_go/pkg /go/pkg
+  - ln -s ${CI_PROJECT_DIR}/_go/bin /go/bin
+
+cache:
+  key: "$CI_COMMIT_REF_NAME"
+  paths:
+    - _go
+  untracked: true
 
 image: registry.gitlab.com/sparetimecoders/build-tools
 

Dockerfile

@@ -1,9 +1,12 @@
-FROM golang:1.11-stretch as builder
+FROM golang:1.12 as deps
 WORKDIR /build
 COPY go.mod go.sum ./
-RUN go get
+RUN go get -mod=readonly
+
+FROM golang:1.12 as builder
+WORKDIR /build
 COPY * ./
-RUN CGO_ENABLED=0 GOOS=linux go build -a -installsuffix cgo -o default-request-adder .
+RUN CGO_ENABLED=0 GOOS=linux go build -mod=readonly -a -installsuffix cgo -o default-request-adder .
 
 FROM scratch
 COPY --from=builder /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/