Wrapper for docker and docker-compose commands to use a specific env if one is not in env

docker-machine-wrapper.sh

#!/bin/bash -eo pipefail
# ______________________
# docker-machine-wrapper: Wraps a command with your docker-machine dev environment
#
# * Put a directory in the beginning of $PATH somewhere in your shell init,
#   ala ~/.bashrc, with a line such as the following at the end of the file:
#
#     export PATH="$HOME/.bin:$PATH"
#
#   Then save this file as "$HOME/.bin/docker". You can symlink it to the same
#   basename as the anything you want to give a default machine env to, say:
#
#     cd ~/.bin; ln -s docker docker-compose
#

# Change this to what you want your default docker machine name to be
: ${MACHINE_NAME:="dev"}

# If we need to eval docker-machine env, do so
if [[ -z "$DOCKER_MACHINE_NAME" ]]; then
    eval $(docker-machine env "$MACHINE_NAME")
fi
 
# Find wrapped executable in PATH
self=$(basename "$0")
abs_self=$(realpath -es "$0")
 
# Get our target
for path in $(type -pa "$self"); do
    # Verify absolute paths don't match ourselves (fruity loops detection)
    abs_path=$(realpath -es "$path")
    [[ "$abs_path" != "$abs_self" ]] || continue
 
    # We have a winner
    target="$path"
    break
done
 
# Assert target
[[ -n "$target" ]] \
  || (echo "Could not find wrapped target \"$self\" in PATH." >&2; exit 1)
 
exec "$target" "$@"