sheerlox / base

The containerbase project's base image source

containerbase base

This repository is the source for the Docker images containerbase/base and ghcr.io/containerbase/base. The commits to the main branch are automatically built and published.

Local development

Install a recent version of:

• Docker
• the buildx plugin

You must first build the CLI, before you build the Docker images.

> pnpm install
> pnpm build

Base image

If you make changes to the src folder or the Dockerfile, you must:

1. run pnpm build
2. rebuild the containerbase/base image

pnpm build
docker buildx bake

You can use the following command to ignore the remote cache for local testing. This may speed up your local builds.

docker buildx bake  --set *.cache-from=

Test images

To run one of the tests use the following command, it will run the Java tests from test/java.

TAG=java docker buildx bake test

For other test images see the test folder.

Distro test images

Noble

To run the noble tests use the following command, it will run the test from test/Dockerfile.noble.

TAG=noble docker buildx bake test-distro

Jammy

To run the jammy tests use the following command, it will run the test from test/Dockerfile.jammy.

TAG=jammy docker buildx bake test-distro

Apt proxy

You can configure an apt proxy for the build by setting an APT_HTTP_PROXY argument. For example: docker build --build-arg APT_HTTP_PROXY=https://apt.company.com . -t my/image

You can export APT_HTTP_PROXY to your local env and our build tools will use your apt proxy for the http sources.

Custom base image

To use a custom base image with containerbase/base read the custom-base-image docs.

Custom Root CA Certificates

To add custom root certificates to the containerbase/base base image read the custom-root-ca docs.

Temporary disable tool installer

To temporarily disable or skip some tool installer: set the build arg IGNORED_TOOLS to a comma separated case-insensitive tool names list.

For example, the following Dockerfile skips the installation of powershell and node:

FROM containerbase/base

ARG IGNORED_TOOLS=powershell,node


# renovate: datasource=github-releases packageName=PowerShell/PowerShell
RUN install-tool powershell v7.1.3

# renovate: datasource=docker versioning=docker
RUN install-tool node 20.9.0

# renovate: datasource=github-releases packageName=moby/moby
RUN install-tool docker 20.10.7

Custom registries

You can replace the default registries used to download the tools. Read the custom-registries docs for more details.

Logging

The new CLI has some new logging features. You can change the default info log level by setting the CONTAINERBASE_LOG_LEVEL¹ environment variable. If CONTAINERBASE_DEBUG is set to true the CLI will automatically set the log level to debug, if not explicit set.

You can also log to a .ndjson file via CONTAINERBASE_LOG_FILE and CONTAINERBASE_LOG_FILE_LEVEL environment variables. The default value for CONTAINERBASE_LOG_FILE_LEVEL is debug.

Footnotes

1. https://getpino.io/#/docs/api?id=level-string ↩