[Docker Entrypoint] Docker entrypoint template which handles multiple commands #docker #script

docker-entrypoint.sh

#!/usr/bin/env sh

# ---------------
# App Entrypoints
# ---------------

run_dev() {
    echo "Starting development server"
}

run_prod() {
    echo "Starting production server"
}

# ------------
# App Lifecyle
# ------------

foo() {
    echo "Foo"
}

bar() {
    echo "Bar" + $@
}

# ------------------------------------------------------
# The script starts here.

echo "[NAME] Container is starting up ..."

if [ "$1" = "/bin/sh" ]; then shift; fi
if [ "$1" = "-c" ]; then shift; fi

command=$1
shift

case $command in
'run_dev') run_dev ;;
'run_prod') foo && bar && run_prod ;;
'foo') foo ;;
'bar') bar "$@" ;;
*)
    echo "Unknown command : $command"
    cat <<-END
Usage:  <command> [args]

Where <command> is one of the below, with optional args availables for * bulleted commands.

[+] Entrypoints :

    - run_dev       Runs the app in development mode.
    - run_prod      Runs the app in production mode.
        
[+] Lifecycle :

    - foo			Foo command description.
    * bar           Bar command description.
					> Args : anything
    				

END
    exit 1
    ;;
esac