Use DuploCloud to build and push a Docker image from GitHub Actions
Avoid using capital letters when referencing a DuploCloud construct, such as a Tenant, even when the UI displays the string in all capital letters. Don't specify DEV01, for example; specify dev01. The `TENANT_NAME` may need to be lowercase even though the UI shows it in uppercase.
Build and Push to ECR
This section aims to show you how to build a Docker image and push it to ECR.
It does three things:
Logs in to AWS ECR (using just-in-time AWS credentials from DuploCloud)
Builds and tags your Docker image, with the tags based on the Git commit SHA and ref.
Pushes your Docker image
Example Workflow
Here is an example of a GitHub workflow that builds and pushes a Docker image to ECR.
To use it, ensure the following are configured correctly:
DUPLO_HOST environment variable
DUPLO_TOKEN environment variable
name: Publish Image
on:
# Triggers the workflow on push to matching branches
push:
branches:
- main
# (Optional) Allows users to trigger the workflow manually from the GitHub UI
workflow_dispatch: {}
# (Optional) Allow other workflows to use this workflow and its outputs
workflow_call:
outputs:
image:
description: The URI of the image
value: ${{ jobs.build_image.outputs.image }}
secrets:
DUPLO_TOKEN:
description: The token to use for DuploCloud API calls
required: true
env:
DUPLO_HOST: ${{ vars.DUPLO_HOST }}
DUPLO_TOKEN: ${{ secrets.DUPLO_TOKEN }}
# Images are usually stored in a dedicated tenant, so the name doesn't change
DUPLO_TENANT: devops
jobs:
build_image:
name: Build and Push Image
runs-on: ubuntu-latest
outputs:
image: ${{ steps.build_image.outputs.uri }}
steps:
- name: Checkout code
uses: actions/checkout@v4
# Configures DuploCloud and the host cloud, for example, AWS
- name: Cloud CI Setup
uses: v0.0.5
# logs into the registry, configures Docker, builds the image, and lastly pushes
- name: Build and Push Docker Image
id: build_image
uses: v0.0.5
with:
platforms: linux/amd64,linux/arm64
push: true # false for dry runs
build-args: >
foo=bar
ice_cream=chocolate
name=${{ github.repository }}
