Script to Docker Build a Tagged Image

buildtag

#!/bin/sh
# This script builds the image with either the specified argument
# or default git long sha of the last commit

IMAGE_NAME=${IMAGE_NAME:-SET-THE-dockerid/repository-name}

must_be_git_repos() {
  git rev-parse --git-dir > /dev/null 2>&1
  errcode=$?
  if [ $errcode -ne 0 ]; then
    echo "OOPSIE, not git repository, you must specify tag"
    exit $errcode
  fi
}

## MAIN ##
if [ -z "$1" ]; then
  must_be_git_repos
  GIT_SHA=$(git log -1 --pretty=%H)
  TAG=${GIT_SHA}
else
  TAG=$1
fi

TAGGED_IMAGE=${IMAGE_NAME}:${TAG}

docker build --no-cache -t ${TAGGED_IMAGE} .