Hands-On Docker for Microservices with Python

Tagging and pushing builds

The following code will add a new stage that will build, tag, and finally push the result to the Docker registry:

jobs:  include:    ...    - stage: push      script:      - cd Chapter04      - docker-compose build server      - docker tag thoughts_server:latest <registry>/thoughts-backend:$TRAVIS_BRANCH

This first part builds the final image for the server and tags it with the name of the branch. To deploy it, we will add a deploy section:

- stage: push  script:  ...  - docker tag thoughts_server:latest <registry>/thoughts-backend:$TRAVIS_BRANCH  deploy:  - provider: script    script: docker push <registry>/thoughts-backend:$TRAVIS_BRANCH    on:      branch: master 

The deploy section will execute a script command when the branch is master. Now, our build ...