Dev Container

This contains all of the setup to allow for various configurations for doing development. Simply build the container, passing in the appropriate build arguments to get the container you need to run your application.

Build Arguments

Argument	Default Value	Description
JAVA_VERSION	21	This is the version of Java to use. Java will be installed from the RHEL yum repos.
INSTALL_SCALA	false	Setting this to true will include the scala executable into the container
SCALA_VERSION	latest	This is the version of scala to install.
INSTALL_MAVEN	false	Setting this to true will include the maven executables into the container
MAVEN_VERSION	latest	This is the version of maven to install. Use version numbers from Maven Releases
INSTALL_GRADLE	false	Setting this to true will include the gradle executables into the container
GRADLE_VERSION	latest	This is the version of gradle to install. Use version numbers without the v from Gradle Releases
INSTALL_NODE	false	Setting this to true will include the node executables into the container
NODE_VERSION	lts	This is the version of node to install. Use version numbers from Node Version Manager
INSTALL_PYTHON	false	Setting this to true will include the python executables into the container
PYTHON_VERSION	3	This is the version of python to install.
INSTALL_SBT	false	Setting this to true will include the sbt executables into the container
SBT_VERSION	latest	This is the version of sbt to install.
INSTALL_SPDX_GENERATOR	false	Setting this to true will include the spdx-sbom-generator utility
SPDX_GENERATOR_VERSION	0.0.10	This is teh verion of the spdx-sbom-generate to install. Use the version numbers without the v from spdx-sbom-generator Releases
INSTALL_GO	false	Setting this to true will install the go language into the container
INSTALL_K8S_UTILS	false	Setting this to true will include kubectl and helm executables into the container
INSTALL_PODMAN	false	Setting this to true will install podman in the container
INSTALL_DOTFILES	true	Setting this to false will keep the default dotfiles for the user
DOTFILES_VERSION	1.0.0	This is the version of sturdy5's dotfiles you want to install. Use version numbers from sturdy5/dotfiles

Example Builds

Build a container for a dotnet application using 2.1

podman build --build-arg INSTALL_DOTNET=true --build-arg DOTNET_VERSION=2.1 -t dev-container:local .

Build a container for a java 8 application with maven

podman build --build-arg JAVA_VERSION=8 --build-arg INSTALL_MAVEN=true -t dev-container:local .

Build a container for a java app with maven and node

podman build --build-arg INSTALL_MAVEN=true --build-arg INSTALL_NODE=true -t dev-container:local .

Running a Container

Once the container is built, you can get into it using the name you tagged it. In the examples above, we named the container dev-container. This uses the zsh shell.

podman run --rm -v ${PWD}:/home/dev/app -it dev-container:local /bin/zsh

Once in the container, you should have the tools necessary to develop your application.

If you've enabled podman, then you need to run the container as privileged

podman run --rm -v ${PWD}:/home/dev/app -it --privileged=true dev-conainer:local /bin/zsh

Running with VSCode

Once the container is built, you can use it within VSCode to do your development. First, start your container, mounting all the things that make sense. Here is what I use:

podman run -d -v ssh:/home/dev/.ssh -v /home/sturdy5/workspaces:/home/dev/workspaces -v app:/home/dev/apps --name dev-container dev-container:local

If you've enabled podman in your container, be sure to run it as privileged

--privileged

By default, the container will start up an nginx server so that it stays running.

Then you have to install the Dev Containers extension in VSCode

Start a VSCode instance attached to your running container

1. Open VSCode locally
2. Click on the green icon at the bottom left
3. Select "Attach to Running Container..."
4. Select the dev-container you started above