Give me a linux environment with the current working directory right now!

give_me_linux_env_with_current_dir_now.sh

#!/bin/bash
set -ex
IMAGE=${1:-ubuntu}

if [ ${IMAGE} = 'golang' ]; then
  TARGET=/go
else
  TARGET=/app
fi

docker pull ${IMAGE}:latest

cat <<-EOF
Commands you might need:
$ docker rm $$(docker ps -aq) # Cleanup exitted containers
$ docker exec -it dev_${IMAGE} /bin/bash # Login to a running container
EOF

docker run \
  -it \
  --name dev_${IMAGE} \
  --mount type=bind,source="$(pwd)",target=${TARGET} \
  ${IMAGE}:latest \
  /bin/bash # Expect IMAGE includes '/bin/bash'