ci: move build inside Dockerfile

.dockerignore

@@ -1,4 +1,10 @@
-vendor
+.dockerignore
 .gitignore
 .git
+.gitlab-ci.yml
+.gitlab
+example
 Dockerfile
+exported
+README.MD
+release

.gitignore

@@ -1 +1,2 @@
 .idea
+exported

.gitlab-ci.yml

@@ -1,81 +1,21 @@
-variables:
-  GOCACHE: "${CI_PROJECT_DIR}/_go/cache"
-  DOCKER_HOST: tcp://docker:2375
-  DOCKER_DRIVER: overlay2
-
-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
+include:
+- template: 'Workflows/MergeRequest-Pipelines.gitlab-ci.yml'
 
 stages:
-  - deps
-  - test
-  - build
-  - package
-  - release
+- build
 
-deps:
-  stage: deps
-  image: golang:1.12
-  script:
-    - go get -mod=readonly
+variables:
+  DOCKER_HOST: tcp://docker:2375/
 
-test:
-  stage: test
-  dependencies:
-    - deps
-  image: golang:1.12
-  script:
-    - go fmt $(go list ./...)
-    - go vet $(go list ./...)
-    - CGO_ENABLED=1 go test -mod=readonly -race $(go list ./...) -coverprofile .testCoverage.txt
+image: buildtool/build-tools:${BUILDTOOLS_VERSION}
 
 build:
   stage: build
-  dependencies:
-    - deps
-  image: golang:1.12
-  script:
-    - GOOS=linux GOARCH=amd64 CGO_ENABLED=0 go build -mod=readonly -o release/default-request-adder -ldflags '-w -s'
-  artifacts:
-    paths:
-      - release/
-
-package:
-  stage: package
-  dependencies:
-    - build
-  image: docker:stable
   services:
-    - docker:${DOCKER_DIND_VERSION}
-  before_script:
-    - docker login -u gitlab-ci-token -p $CI_JOB_TOKEN $CI_REGISTRY
+  - docker:${DOCKER_DIND_VERSION}
   script:
-    - docker build -t $CI_REGISTRY_IMAGE:$CI_COMMIT_SHA .
-    - docker tag $CI_REGISTRY_IMAGE:$CI_COMMIT_SHA $CI_REGISTRY_IMAGE:$CI_COMMIT_REF_NAME
-    - docker push $CI_REGISTRY_IMAGE:$CI_COMMIT_SHA
-    - docker push $CI_REGISTRY_IMAGE:$CI_COMMIT_REF_NAME
-
-release:
-  stage: release
-  dependencies:
-    - package
-  image: docker:stable
-  services:
-    - docker:${DOCKER_DIND_VERSION}
-  before_script:
-    - docker login -u gitlab-ci-token -p $CI_JOB_TOKEN $CI_REGISTRY
-  script:
-    - docker pull $CI_REGISTRY_IMAGE:$CI_COMMIT_SHA
-    - docker tag $CI_REGISTRY_IMAGE:$CI_COMMIT_SHA $CI_REGISTRY_IMAGE:latest
-    - docker push $CI_REGISTRY_IMAGE:latest
-  only:
-    - master
+  - build
+  - curl -Os https://uploader.codecov.io/latest/linux/codecov
+  - chmod +x codecov
+  - ./codecov -t ${CODECOV_TOKEN} -R $CI_PROJECT_DIR -C $CI_COMMIT_SHA -r $CI_PROJECT_PATH
+  - push

Dockerfile

@@ -1,3 +1,25 @@
+FROM golang:1.20.0 as deps
+WORKDIR /build
+ADD go.* /build
+RUN go mod download
+
+FROM deps as build
+ENV CGO_ENABLED=0
+ADD . /build
+RUN if [ $(go mod tidy -v 2>&1 | grep -c unused) != 0 ]; then echo "Unused modules, please run 'go mod tidy'"; exit 1; fi
+RUN go fmt ./...
+RUN go vet ./...
+RUN CGO_ENABLED=1 go test -mod=readonly -race -coverprofile=coverage.txt.tmp -covermode=atomic -coverpkg=$(go list ./... | tr '\n' , | sed 's/,$//') ./...
+RUN ["/bin/bash", "-c", "cat coverage.txt.tmp | grep -v -f <(find . -type f | xargs grep -l 'Code generated') > coverage.txt"]
+RUN go tool cover -html=coverage.txt -o coverage.html
+RUN go tool cover -func=coverage.txt
+RUN rm coverage.txt.tmp
+RUN GOOS=linux GOARCH=amd64 CGO_ENABLED=0 go build -mod=readonly -o release/default-request-adder -ldflags '-w -s'
+
+FROM scratch as export
+COPY --from=build /build/coverage.txt /
+
 FROM scratch
-COPY release/default-request-adder /
+COPY --from=build /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/
+COPY --from=build /build/release/default-request-adder /
 CMD ["/default-request-adder"]