Docker image based on devcontainers/base image with devcontainers/cli

This is a Docker image based on devcontainers/base with docker-outside-of-docker and node features installed along with devcontainers/cli node package.

This allows for local devcontainer image builds beforeahead the image is ready to be built using devcontainers/ci GitHub Action.

Building

You can build the image like this:

#!/usr/bin/env bash

DOCKER_REPOSITORY_NAME="rubensa"
DOCKER_IMAGE_NAME="devcontainers-cli"
DOCKER_IMAGE_TAG="latest"

docker buildx build --platform=linux/amd64,linux/arm64 --no-cache \
  -t "${DOCKER_REPOSITORY_NAME}/${DOCKER_IMAGE_NAME}:${DOCKER_IMAGE_TAG}" \
  --label "maintainer=Ruben Suarez <[email protected]>" \
  .

docker buildx build --load \
  -t "${DOCKER_REPOSITORY_NAME}/${DOCKER_IMAGE_NAME}:${DOCKER_IMAGE_TAG}" \
  .

Running

You can run the container like this:

#!/usr/bin/env bash

DOCKER_REPOSITORY_NAME="rubensa"
DOCKER_IMAGE_NAME="devcontainers-cli"
DOCKER_IMAGE_TAG="latest"

prepare_docker_outside_of_docker() {
  MOUNTS+=" --mount type=bind,source=/var/run/docker.sock,target=/var/run/docker-host.sock"
}

prepare_workspace() {
  ENV_VARS+=" --env=CONTAINER_WORKSPACE_FOLDER=/workspaces/${PWD##*/}"
  MOUNTS+=" --mount type=bind,source=${PWD},target=/workspaces/${PWD##*/}"
}

prepare_docker_outside_of_docker
prepare_workspace

docker run --rm -it \
  ${ENV_VARS} \
  ${MOUNTS} \
  "${DOCKER_REPOSITORY_NAME}/${DOCKER_IMAGE_NAME}:${DOCKER_IMAGE_TAG}" "$@"

Inside the container you should be able to build a devcontainer image which definition is under current directory's .github folder (containing the .devcontainer folder with the devcontainer.json file) by running:

devcontainer build --workspace-folder ${CONTAINER_WORKSPACE_FOLDER}/.github --image-name ghcr.io/rubensa/${PWD##*/}-devcontainer --no-cache

as CONTAINER_WORKSPACE_FOLDER env variable contains the path for the current host directory that is bind mounted inside the container.