chore: simplify pipeline

.gitlab-ci.yml

@@ -1,18 +1,7 @@
+image: golang:1.14
+
 variables:
-  GOCACHE: "${CI_PROJECT_DIR}/_go/cache"
-
-before_script:
-  - mkdir -p ${CI_PROJECT_DIR}/_go/{pkg,bin,cache}
-  - rm -rf /go/pkg || true
-  - mkdir -p /go
-  - 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
+  GOFLAGS: -mod=readonly
 
 stages:
   - deps
@@ -20,7 +9,6 @@ stages:
 
 deps:
   stage: deps
-  image: golang:1.14
   script:
     - go mod download
 
@@ -28,11 +16,9 @@ test:
   stage: test
   dependencies:
     - deps
-  image: golang:1.14
   script:
     - go fmt $(go list ./...)
     - go vet $(go list ./...)
-    - unset "${!CI@}"
     - CGO_ENABLED=1 go test -mod=readonly -race -coverprofile=coverage.txt -covermode=atomic -coverpkg=$(go list ./... | tr '\n' , | sed 's/,$//') ./...
     - go tool cover -html=coverage.txt -o coverage.html
     - go tool cover -func=coverage.txt
@@ -40,3 +26,4 @@ test:
   artifacts:
     paths:
       - coverage.html
+      - coverage.txt