Single and two phased docker build scripts

bin-bob-1.sh

#!/bin/bash

set -e

VERSION="1"
IMAGE="hello/simple"

_run(){
  echo "----> $@"
  $@
}

case $1 in
  build)
    _run docker build -t "${IMAGE}:build" .
    ;;

  publish)
    sha="$(git rev-parse HEAD | cut -c1-10)"
    num="$(git rev-list --count HEAD)"
    tag="${IMAGE}:${VERSION}.${num}-${sha}"

    _run docker tag "${IMAGE}:build" "${tag}"
    _run docker push "${tag}"

    echo "Image ${tag} pushed to docker registry"
    ;;

  shipit)
    $0 build
    $0 publish
    ;;

  start)
    docker-compose up
    ;;
esac

bin-bob-2.sh

#!/bin/sh

# configuration
VERSION="1"
IMAGE="hello/world"

DOCKERFILE_BIILD="Dockerfile.build"
DOCKERFILE_RELEASE="Dockerfile.release"

set -e

_run(){
  echo "----> $@"
  $@
}

command=$1
shift

case $command in
  build)
    _run docker build -f "${DOCKERFILE_BIILD}" -t "${IMAGE}:build" $@ .
    ;;

  release)
    cid="build-$(tr -cd 0-9 < /dev/urandom | head -c 8)"

    docker rm -f "${cid}" 2> /dev/null || true
    _run docker create --name "${cid}" "${IMAGE}:build"
    _run docker cp "${cid}":/usr/src/app.tgz app.tgz
    _run docker rm -f "${cid}" || true
    _run docker build -f "${DOCKERFILE_RELEASE}" -t "${IMAGE}:release" .
    rm -f app.tgz

    echo "Docker image ${IMAGE}:release has been successfully created"
    ;;

  publish)
    sha="$(git rev-parse HEAD | cut -c1-10)"
    num="$(git rev-list --count HEAD)"
    tag="${IMAGE}:${VERSION}.${num}-${sha}"

    _run docker tag "${IMAGE}:release" "${tag}"
    _run docker push "${tag}"

    echo "Image ${tag} pushed to docker registry"
    ;;

  shipit)
    $0 build
    $0 release
    $0 publish
    ;;

  *)
    echo "Usage: $0 build|release|publish|shipit"
    exit 2
    ;;
esac;