simple gitlab-ci pipeline (on golang)

Below is a simple exmple of how to use gitlab ci
you need to have two different runner: one windows with tag "windows" and one linux with tag "linux"
the pipeline basically try to do
-some go static check 
-build go app on both window and linux parallel
-run int test
-deploy goapp to qa1 and qa2 parallel
-deploy to production

there is a lot room to improve this, say, qa1 could be a windows qa2 could be a linux, say, we do not really need runner but can use
golang docker image instead etc etc
but the purpose of this , is to show how gitlab-ci works and see if it is an option to replace our jenkins pipeline
##############################################################################################################

>$git_root/.gitlab-ci.yml

variables:
  REPO_NAME: git.comhem.com/devliery-tools/dashing-delivery-dashboard-onk8

before_script:
  - echo "start job at :" `date`
  - echo "workspace is:" `pwd`

after_script:
  - echo "done job at :" `date`

stages:
  - check
  - build
  - integration
  - deployci
  - deployqa
  - prod

syntaxcheck:
  stage: check 
  script:
    - mkdir -p $GOPATH/src/$(dirname $REPO_NAME)
    - ln -svf $CI_PROJECT_DIR $GOPATH/src/$REPO_NAME
    - cd $GOPATH/src/$REPO_NAME
    - go fmt
    - go vet
    - go lint
    
    
windows build:
  stage: build
  tags:
    - windows
  script:
    - GOOS=windows GOARCH=386 go build -o gojira-amd32
    - GOOS=windows GOARCH=amd64 go build -o gojira-amd64
  only:
    - master

Linux build:
  stage: build
  tags:
    - linux
  script:    
    GOOS=linux GOARCH=amd64 go build -o gojira
  only:
    refs:
      - master

intergration test:
  stage: integration
  script:
    - echo "doing some test thing"
    
deploy ci1:
  variables:
    env: ci1
  stage: deployci
  script:
    - echo "deploy it to ${env} "


deploy qa2:
  variables:
    env: qa2
  stage: deployqa
  script:
    - echo "deploy it to ${env} "

deploy qa1:
  variables:
    env: qa1
  stage: deployqa
  script:
    - echo "deploy it to ${env} "
    
deploy prod:
  variables:
    env: prod
  stage: prod
  script:
    - echo "deploy it to ${env}"
  after_script:
    - echo "production deploy done"