Heroku is a functional PaaS that can deploy the Docker image, and CircleCI is also useful SaaS for CI/CD.
In this post, I show an example of CircleCI config which deploys the Docker image to Heroku.
Actually, I had trouble when setting it up. π€£
Prerequisite
- Code repository and CircleCI had already connected
- Created Heroku app for deploying the Docker image
- Generated Heroku API Key in Manage Account view on Heroku
Set up
Environment Variable
Set environment variables on your project settings in CircleCI.
| Name | Value |
|---|---|
| HEROKU_API_KEY | Your Heroku API Key |
| HEROKU_APP_NAME | Heroku app name for deploying the Docker image |
config.yml
Modify config.yml below.
jobs:
# Build the docker image and run tests.
build_and_test:
docker:
- image: cimg/base:2021.07
steps:
# For using docker commands.
- setup_remote_docker:
version: 19.03.13
# Build the docker image
- checkout
- run: docker build -t webapp .
# Run tests.
- run:
command: docker run webapp python3 tests.py
# Build the docker image and deploy it to Heroku.
build_and_deploy:
docker:
- image: cimg/base:2021.07
steps:
# For using docker commands.
- setup_remote_docker:
version: 19.03.13
# Build the docker image
- checkout
- run: docker build .
# Deploy to Heroku
- heroku/install
- run: heroku container:login
- heroku/push-docker-image:
process-types: web
- heroku/release-docker-image:
process-types: web
orbs:
# For using Heroku CLI commandο½.
heroku: circleci/heroku@1.2.6
version: 2.1
workflows:
heroku_deploy:
jobs:
- build_and_test
- build_and_deploy:
requires:
# Deploy after testing.
- build_and_test
Test
Example codes are in this repository.
Refs.
Thanks!π
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