BldContainers_template

Template files for creating a container for a build environment

Intro

As a template, the basic files needed to create a container for housing a particular build environment are:

1. The container recipe (Dockerfile) itself
2. A build script that builds the image. This may be as simple as the build command, but can get more complex with complex build environments.
3. An install script that at least sets as alias up for invoking the container image (since the run command has so many options to remember). But also it may setup the corresponding environment on the Host for persistent build data if it cannot be done with the host setup script run inside the container (eg, cloning source code that requires the user's credentials).
4. A Host initialization script that may do further one-time Host setup, but run within the container (eg, the source code you are building that you will also want to modify).
5. An initialization script to be run each time the container image is invoked. At least, this is setting up the user id so that the owner of the build artifacts is the same as the host user invoking the container. It may also initialize anything else needed before a build.

Porting

To create a containerized build environment from these templates:

1. Set names for the container and what it builds (_what_i_build, autoSDbuilder) in build_docker_image.sh and install.sh
2. Update Dockerfile to use the desired base OS, install the necessary packages, and anything else that can be statically installed for the build environment.
3. Update the Host install script install.sh to do any non-container installations, like clone git repos.
4. Update the container based Host setup script hostsetup.sh with any remaining one-time Host setup.
5. Add any setup needed each time the container is invoked in entrypoint.sh.
6. Update the README.md with build and usage instructions for this particular build environment.

Using

Building the container

./build_docker_image.sh

Installing the build environment to use the container

./install.sh

Using the build environment

In the installation directory (specified in the installation step):

• Source the .alias file source .alias
• Build the project: <build_container> make [-C <sub_dir>]
• Or enter the container and execute commands directly: `<build_container>``

Notes

If working inside the container, any pushes to the repo need to be made outside the container, as the container does not have the user's push credentials.