docker-exec-flake8-mypy

#!/bin/bash
# Run docker exec against a container, with special handling of flake8 and mypy.
#
# This script is intended for use by host-side editors/IDEs. For example, to create a
# host-side executable that behaves like flake8, create an executable file named "flake8"
# containing:
#
# #!/bin/bash
# DOCKER_EXEC_TASK=flake8 docker-exec-flake8-mypy $@


die () {
    echo "$1" 1>&2
    exit 1
}

[[ -n "$DOCKER_EXEC_TASK_HOST_PROJECT_ROOT_DIRECTORY" ]] || \
    die "DOCKER_EXEC_TASK_HOST_PROJECT_ROOT_DIRECTORY environment variable must be set (path to project root directory on host)"
[[ $DOCKER_EXEC_TASK_HOST_PROJECT_ROOT_DIRECTORY = */ ]] ||  DOCKER_EXEC_TASK_HOST_PROJECT_ROOT_DIRECTORY+=/

container=$(docker container ls -q --filter "label=com.docker.compose.service=$DOCKER_EXEC_SERVICE" | head -n 1)
[[ -n "$container" ]] || die "No container found for service"

# Relativize all paths occurring in the command line.
args=$(sed "s,$DOCKER_EXEC_TASK_HOST_PROJECT_ROOT_DIRECTORY,,g" <<<"$@")

docker_exec="docker exec --interactive  $container"
if [[ "$DOCKER_EXEC_TASK" = "flake8" ]]; then
    $docker_exec flake8 $args
elif [[ "$DOCKER_EXEC_TASK" = "mypy" ]]; then
    $docker_exec mypy --follow-imports=silent $args | sed "s,^,$DOCKER_EXEC_TASK_HOST_PROJECT_ROOT_DIRECTORY,"
else
    $docker_exec $args
fi