Small util to build a bunch of docker hierarchical containers

build-containers.sh

#!/bin/bash
SCRIPT_ROOT="$( dirname ${0} )"
CONTAINERS_ROOT="${SCRIPT_ROOT}/containers"
DOCKER="${SCRIPT_ROOT}/docker.sh"

function build_leaf() {
  ${DOCKER} build -t "${1}" "${CONTAINERS_ROOT}/${1}";
}

function build_node() {
  PARENT_CONTAINER="$( grep -E "FROM\s+" "${1}/Dockerfile" | sed -r "s/^FROM\s+(.+)$/\1/" )";

  if [ "x${PARENT_CONTAINER}" != "x" ] && [ -d "${CONTAINERS_ROOT}/${PARENT_CONTAINER}" ];
  then
    build_node "${PARENT_CONTAINER}";
  fi;

  build_leaf "${1}";
}

IFS=$'\n';
for i in $( find "${CONTAINERS_ROOT}/" -name "Dockerfile" );
do
  CONTAINER="$( sed -e "s:^${CONTAINERS_ROOT}/::" -e "s:/Dockerfile$::" <<< "${i}" )";
  build_node "${CONTAINER}"
done;