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Docker Cheat-sheet for beginners 🐳

keshav Sandhu on September 19, 2024

🔧 Common Docker Commands Start Docker: systemctl start docker # Linux open -a Docker # macOS Enter fullscreen mode ...

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Andrei Telteu • Sep 20 '24

You can also make a helper script:
New file at the root folder called dc without extension.
Content example. Modify for your needs.

#!/bin/bash
trap "exit" 0
DC="docker compose" # add  `-f docker/compose.yml` if it's in another folder
if [ $# -eq 0 ]; then
    $DC ps -a
elif [ $1 == "up" ]; then
    $DC up -d
elif [ $1 == "nr" ]; then
    if [ $# -gt 1 ]; then
        $DC exec node su node -c "${*:2}"
    else
        $DC exec node su node
    fi
elif [ $1 == "npm" ]; then
    $DC exec node su node -c "npm ${*:2}"
elif [ $1 == "install" ]; then
    $DC exec node su node -c 'npm install'
elif [ $1 == "recreate" ]; then
    $DC up -d --force-recreate ${*:2}
elif [ $1 == "build" ]; then
    $DC up -d --force-recreate --build ${*:2}
else
    $DC $*
fi

Give execute permission with chmod +x ./dc
And now you can run:

./dc to show all containers with status
./dc up to start in detached mode
./dc install to run npm install in the node container as user node
./dc npm install package-name-here to run any npm command inside node container. Works with ./dc npm run start too
./dc nr interactive exec inside node container
./dc nr node index.js run any command inside node container
./dc recreate applies any modifications to docker-compose.yml
./dc recreate node applies modifications to compose, only for node container
./dc build if you have a custom dockerfile, does run dc up with a fresh build.
./dc logs -n 10 -f node - any other docker-compose command works as expected.