Why would you want to run Linux apps in Docker on a Mac? Maybe there's a Linux program you love or you want the added security of sandboxing an app. Or maybe, as was the case with me, you're developing a C++ program targeting Linux and don't want to cross compile your dependencies.
The following steps get the CLion IDE running in a Docker container created during the project's build process. It uses XQuartz, a version of the X Window System that runs on macOS, along with socat.
- Download the Linux version of CLion
- Each time dependencies change, run
create_dev_container.shto create a Docker image and container. The script assumes~/devis your code directory. If you use something different, edit the script or run it asCODE_DIR=<your_dir> ./create_dev_container.sh - Run
start_dev_container.shto start the container and exec bash inside of it - From inside the container, run
/home/dev/clion-XXX/bin/clion.shto start CLion. If this fails, ensure your container contains a JRE by either manually runningapt install default-jreor adding it to the Dockerfile. - Either select "Evaluate for free" or enter your activation code
- Open your project
- Build it and enjoy code completion, etc.!
- If you make changes to settings they'll be lost each time you create a new container. To save them, run
docker cp my_project:/root/.CLionXXX/ ~/devand import them next time you start CLion in a fresh container.
create\_dev\_container.sh:
NAME=my_project
EXISTING_IMAGE_ID=$(docker ps --all --filter "name=$NAME" --format "{{.Image}}")
if [[-n "$EXISTING_IMAGE_ID"]]; then
read -p "$NAME already exists. Delete it? " answer
while true
do
case $answer in
[yY]* ) docker stop $NAME > /dev/null 2>&1
docker rm $NAME > /dev/null 2>&1
docker rmi $EXISTING_IMAGE_ID
break;;
* ) echo "exiting"
exit;;
esac
done
else
echo "$NAME does not exist, creating..."
fi
# Build your docker container
./build.sh
CODE_DIR=${CODE_DIR:-~/dev/}
IP_ADDRESS=$(ifconfig en0 | grep "inet " | cut -d " " -f 2)
IMAGE_ID=$(docker images --format "{{.ID}}" build/local/my-project:latest)
echo "Creating container using image ID $IMAGE_ID, mapping IP address $IP_ADDRESS, and mounting $CODE_DIR..."
docker create -it -e DISPLAY=$IP_ADDRESS:0 -v $CODE_DIR:/home/dev/ $IMAGE_ID bash
GENERATED_NAME=$(docker ps --all --filter "ancestor=$IMAGE_ID" --format "{{.Names}}")
echo "Renaming $GENERATED_NAME to $NAME..."
docker rename $GENERATED_NAME $NAME
echo "\nContainer created, run ./start_dev_container.sh to exec bash inside of it."
start\_dev\_container.sh:
NAME=my_project
APP=socat
brew ls --versions $APP > /dev/null 2>&1 || brew install $APP
APP=xquartz
brew cask ls --versions $APP > /dev/null 2>&1 || brew cask install $APP
if ["$(lsof -nP -i4TCP:6000 | grep -c LISTEN)" -eq 0]; then
socat TCP-LISTEN:6000,reuseaddr,fork UNIX-CLIENT:\"$DISPLAY\"
fi
open -a Xquartz
docker start $NAME > /dev/null 2>&1
docker exec -it $NAME bash
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