.gitlab-ci.yml

#gitlab ci uses docker images to run the pipeline and these images we have to define here. 
image: docker:19.03.5
services:
  - docker:19.03.5-dind
stages:
  - Build
  - Push

before_script:
    - apk add python3 #install it in our docker image
    - pip3 install awscli==1.18.8  
    - docker load --input data/image.tar #load the image from artifact from previous job 
    - $(aws ecr get-login --no-include-email --region us-east-1)  #login command


Build:
  stage: Build
  before_script: []
  script: 
    - mkdir data/
    - docker build --compress -t proxy . # build our docker file in compress state in same path and tag it with "proxy"
    - docker save --output data/image.tar proxy
  artifacts:  # to pass file from one job to another
    name: image
    paths:
      - data/

Push Dev:
  stage: Push
  script: 
    - docker tag proxy:latest $ECR_REPO:dev
    - docker push $ECR_REPO:dev  #to push repo to AWS ECR
  rules:
    - if: "$CI_COMMIT_BRANCH=='main' "  # to specify when to run the job, when our branch in main. 
  

Push Release:
 stage: Push
 script:
  - export TAGGED_ECR_REPO=$ECR_REPO:$(echo $CI_COMMIT_TAG | sed 's/-release//')  #to strip of the release no and append it to ECR_REPO
  - docker tag proxy:latest $TAGGED_ECR_REPO
  - docker push $TAGGED_ECR_REPO
  - docker tag $TAGGED_ECR_REPO $ECR_REPO:latest
  - docker push $ECR_REPO:latest

 rulse:
  - if: "$CI_COMMIT_BRANCH =~ /^*-release$/"  #this will be triggered when anything ending with release comes.