SSH agent forwarding

We need buildkit:

export DOCKER_BUILDKIT=1

And also the exact way for forwarding agent to running instance is different on OSX:

export DOCKER_SSHAGENT="-v /run/host-services/ssh-auth.sock:/run/host-services/ssh-auth.sock -e SSH_AUTH_SOCK=/run/host-services/ssh-auth.sock"

and Linux:

export DOCKER_SSHAGENT="-v $SSH_AUTH_SOCK:$SSH_AUTH_SOCK -e SSH_AUTH_SOCK"

Creating a development container

Build image, create container and start it:

docker build --ssh default --target devel_shell -t datastreamservicelib:devel_shell .
docker create --name datastreamservicelib_devel -v `pwd`":/app" -it -v /tmp:/tmp `echo $DOCKER_SSHAGENT` datastreamservicelib:devel_shell
docker start -i datastreamservicelib_devel

pre-commit considerations

If working in Docker instead of native env you need to run the pre-commit checks in docker too:

docker exec -i datastreamservicelib_devel /bin/bash -c "pre-commit install"
docker exec -i datastreamservicelib_devel /bin/bash -c "pre-commit run --all-files"

You need to have the container running, see above. Or alternatively use the docker run syntax but using the running container is faster:

docker run -it --rm -v `pwd`":/app" datastreamservicelib:devel_shell -c "pre-commit run --all-files"

Test suite

You can use the devel shell to run py.test when doing development, for CI use the “tox” target in the Dockerfile:

docker build --ssh default --target tox -t datastreamservicelib:tox .
docker run -it --rm -v `pwd`":/app" `echo $DOCKER_SSHAGENT` datastreamservicelib:tox

Production docker

There’s a “production” target as well for quick running of testsubscriber and testpublisher

docker build –ssh default –target production -t datastreamservicelib:latest . docker run –rm -it -v /tmp:/tmp datastreamservicelib:latest testpublisher -s ipc:///tmp/test_pub.sock -t foo docker run –rm -it -v /tmp:/tmp datastreamservicelib:latest testsubscriber -s ipc:///tmp/test_pub.sock -t foo

Note that on non-linux platforms the IPC sockets may not as expected between host and container over volume mounts.