Merge GitLab CI config

.gitlab-ci.yml

 ---
 
-image: debian:buster
-
 variables:
   GOCACHE: $CI_PROJECT_DIR/.gocache
   GOPATH: $CI_PROJECT_DIR/.go
+  PACKAGE_REGISTRY_URL: >-
+    $CI_API_V4_URL/projects/$CI_PROJECT_ID/packages/generic/needrestart2prom
 
 cache:
   paths:
     - .gocache
     - .go
 
-before_script:
-  - echo 'deb http://deb.debian.org/debian buster-backports main' > /etc/apt/sources.list.d/backports.list
-  - apt-get update && apt-get -qq -y -t buster-backports install golang git
-  - go version
-
 build:
+  image: golang:1-buster
+  stage: build
+  before_script:
+    - go version
   script:
     - go build -o $CI_PROJECT_NAME-$GOOS-$GOARCH
   artifacts:
@@ -29,3 +28,37 @@ build:
         GOARCH:
           - amd64
           - arm
+
+lint:
+  image: golangci/golangci-lint:v1.39-alpine
+  stage: test
+  needs: []
+  script:
+    - >-
+      golangci-lint
+      run
+      -v
+      --max-issues-per-linter=0
+      --max-same-issues=0
+      --out-format=junit-xml
+      --timeout=10m
+      > golangci-output.xml
+  artifacts:
+    paths:
+      - golangci-output.xml
+    reports:
+      junit: golangci-output.xml
+    expire_in: 7 days
+
+upload:
+  stage: deploy
+  image: curlimages/curl:latest
+  needs:
+    - build
+  rules:
+    - if: '$CI_COMMIT_REF_NAME == $CI_DEFAULT_BRANCH'
+  script:
+    - |
+      for file in $CI_PROJECT_NAME-linux-amd64 $CI_PROJECT_NAME-linux-arm; do
+      curl --header "JOB-TOKEN: ${CI_JOB_TOKEN}" --upload-file ${file} ${PACKAGE_REGISTRY_URL}/${CI_COMMIT_REF}/${file} ;
+      done