multi plateform docker image builder

[ghkdqhrbals]

While using docker/build-push-action@v5, the context cannot be found.

[ghkdqhrbals]

Valid build push action buildx option list

valid inputs are :

['add-hosts', 'allow', 'annotations', 'attests', 'build-args', 'build-contexts', 'builder', 'cache-from', 'cache-to', 'cgroup-parent', 'context', 'file', 'labels', 'load', 'network', 'no-cache', 'no-cache-filters', 'outputs', 'platforms', 'provenance', 'pull', 'push', 'sbom', 'secrets', 'secret-envs', 'secret-files', 'shm-size', 'ssh', 'tags', 'target', 'ulimit', 'github-token']

[ghkdqhrbals]

reference : https://github.com/docker/build-push-action/issues/259

[ghkdqhrbals]

Solution

Remove docker/build-push-action@v5. Because when I use this plugin, Dockerfile is run in separate path like /tmp/buildkit-mount1302695367/bm-controller/build/libs ( not start from ${{ github.workspace }} ). When Dockerfile search for .jar which is located inside ${{ github.workspace }}/bm-controller/build/libs, it cannot find path.

So create custom script for running docker login, install buildx, push docker hub, etc.

As you can see, below screenshot shows our image can produce multi-arch by running custom script.

Custom Script

#!/bin/bash

DEFAULT_USER="ghkdqhrbals"
DEFAULT_PLATFORM="linux/amd64,linux/arm64"
DEFAULT_VERSION="latest"

# Parse command-line arguments
while [[ $# -gt 0 ]]; do
    case "$1" in
        -u|--username)
            BM_USER="$2"
            shift
            ;;
        -p|--platform)
            BM_PLATFORM="$2"
            shift
            ;;
        -v|--version)
            BM_VERSION="$2"
            shift
            ;;
        -t|--token)
            DOCKER_HUB_TOKEN="$2"
            shift
            ;;
        *)
            echo "Invalid argument: $1"
            exit 1
            ;;
    esac
    shift
done

BM_USER=${BM_USER:-$DEFAULT_USER}
BM_PLATFORM=${BM_PLATFORM:-$DEFAULT_PLATFORM}
BM_VERSION=${BM_VERSION:-$DEFAULT_VERSION}

# Check if required arguments are provided
if [ -z "$BM_USER" ] || [ -z "$BM_PLATFORM" ] || [ -z "$BM_VERSION" ] || [ -z "$DOCKER_HUB_TOKEN" ]; then
    echo "Usage: $0 [-u|--username <username>] [-p|--platform <platform>] [-v|--version <version>] [-t|--token <docker_hub_token>]"
    exit 1
fi

# This is a script to push with multiple platform images to docker hub
echo "Logging in to Docker Hub"
docker login -u "$BM_USER" -p $DOCKER_HUB_TOKEN

# Use Docker Buildx
echo "Using Docker Buildx"
docker buildx create --use
docker buildx inspect --bootstrap

# Build and push Docker images for multiple platforms
echo "Build the docker image with multi platform support"
docker buildx build --platform ${BM_PLATFORM} -t ${BM_USER}/bm-controller:${BM_VERSION} -f ./bm-controller/Dockerfile --push .
docker buildx build --platform ${BM_PLATFORM} -t ${BM_USER}/bm-agent:${BM_VERSION} -f ./bm-agent/Dockerfile --push .

# Push the docker image to docker hub
images=$(docker images --format "{{.Repository}}" | grep "^${BM_USER}")
echo "Image deploy to docker hub"
for image in $images; do
  echo "${image}"
  docker push "${image}"
done