Example of Docker as a Function

example_script.sh

function install_mix_dependencies() {
  echo "Starting installing MIX dependencies..."
  docker run \
    --rm --memory="512M" \
    -w="/app" \
    -v $PWD:/app \
    -e MIX_ENV=prod \
    --entrypoint=/app/docker/mix_deps_install.sh \
    elixir:1.3.2
}

function install_npm_dependencies() {
  echo "Starting installing NPM dependencies..."
  docker run \
    --rm --memory="512M" \
    -w="/app" \
    -v $PWD:/app \
    --entrypoint=/app/docker/npm_deps_install.sh \
    node:6.9.4
}

function build_web_container() {
  echo "Building web container..."
  docker build -t my_app_image .
}

function run_web_container() {
  echo "Running web container..."
  docker run \
    --name $APP_CONTAINER_NAME \
    --link $DB_CONTAINER_NAME:db_host \
    -d -p 8888:8888 -i my_app_image
}

install_mix_dependencies;
install_npm_dependencies;
build_web_container;
run_web_container;