docker.sh

#!/usr/bin/env bash
set -e

type docker >/dev/null 2>&1 || { echo >&2 "docker is not available. Aborting."; exit 1; }

GIT_BRANCH=$(git symbolic-ref HEAD | sed 's/refs\/heads\///')

# Configuration section
IMAGE_NAME=myproject
LIVE_BRANCH=master
TEST_BRANCH=testing
EXPOSED_PORT=80
LOCAL_PORT=8000
BEFORE_BUILD="npm run build"
TAG_FOR_LIVE="latest"
TAG_FOR_STAGING="test"
# end configuration section

TAG_NAME=${TAG_FOR_STAGING}
if [ "${GIT_BRANCH}" == "${LIVE_BRANCH}" ]; then
    TAG_NAME=${TAG_FOR_LIVE}
fi

COMMIT_ID=$(git rev-parse --short HEAD)
TAGGED_WITH_COMMIT="${IMAGE_NAME}:${COMMIT_ID}"
TAGGED_WITH_NAME="${IMAGE_NAME}:${TAG_NAME}"

build() {
    NODE_ENV=production ${BEFORE_BUILD} || exit 1
    docker build \
        -t ${TAGGED_WITH_COMMIT} \
        -t ${TAGGED_WITH_NAME} \
        ./
}

run() {
    local container=$(docker ps | grep ${TAGGED_WITH_NAME} | awk '{print $1}')
    if [ "${container}" == "" ]; then
        docker run -p ${LOCAL_PORT}:${EXPOSED_PORT} ${TAGGED_WITH_NAME}
    else
        echo "Container is already running"
    fi
}

stop() {
    local container=$(docker ps | grep ${TAGGED_WITH_NAME} | awk '{print $1}')
    if [ "${container}" != "" ]; then
        docker stop -t 0 ${container}
    else
        echo "Nothing to stop ¯\_(ツ)_/¯"
    fi
}

sh() {
    local container=$(docker ps | grep ${TAGGED_WITH_NAME} | awk '{print $1}')
    if [ "${container}" != "" ]; then
        docker exec -ti ${container} /bin/bash
    else
        echo "No running image found ¯\_(ツ)_/¯"
    fi
}

case "$1" in
    build)
        build
        ;;
    run)
        run
        ;;
    start)
        stop
        build
        run
        ;;
    restart)
        stop
        run
        ;;
    stop)
        stop
        ;;
    sh)
        sh
        ;;
    *)
        echo $"Usage: $0 {build|run|start|restart|stop|sh}"
        exit 1
esac

exit 0