container image based on RHEL 7.5 for AWS RHUI Hosts

aws-rhel-buildah.sh

#!/bin/bash
# This will build a container image based on RHEL 7.5
# for use in AWS with RHUI

DEFAULT_FROM=rhel7/rhel:7.5
DEFAULT_TAG='devel/rhel:latest'
BZ='https://bugzilla.redhat.com/show_bug.cgi?id=1498628'

declare -r DEFAULT_FROM DEFAULT_TAG BZ

err() {
  echo -e '\e[1;31mERROR:\e[0;31m' "$@" '\e[0m' >&2
}

info() {
  echo -e '\e[0;32m* INFO\e[0m' "$@" '\e[0m'
}

[ $UID -ne 0 ] && err "Due to this BZ[1], we need to run as root!" && err "[1]: $BZ" && exit 1

OPTS=`getopt -o hfut: --long help,from:,user:,tag: -- "$@"`

[ $? != 0 ] && err "Failed parsing options." && exit 1

eval set -- "$OPTS"

FROM=$DEFAULT_FROM
TAG=$DEFAULT_TAG

while true; do
  case "$1" in
    -f | --from ) FROM="$2"; shift 2;;
    -t | --tag  ) TAG="$2" ; shift 2;;
    -- ) shift; break ;;
    * ) break ;;
  esac
done

info "FROM = $FROM"
info "TAG  = $TAG"

set -x
set -e -E

errexit() {
  err "There was an error in the last command!"
  clean
  exit 1
}

clean() {
  [ "x$ctr1" != "x" ] && buildah rm $ctr1
}

ctr1=$(buildah from $FROM)

trap errexit EXIT

# ensure the RHUI stuff is in the container
buildah copy $ctr1 /etc/yum.repos.d /etc/yum.repos.d
buildah copy $ctr1 /etc/pki/rhui /etc/pki/rhui
buildah copy $ctr1 /usr/lib/yum-plugins /usr/lib/yum-plugins
buildah copy $ctr1 /etc/yum/pluginconf.d /etc/yum/pluginconf.d

# remove the cache and add a user
buildah run $ctr1 -- yum install -y sudo
buildah run $ctr1 -- rm -rf /var/cache/yum/x86_64
buildah run $ctr1 -- useradd devel
buildah run $ctr1 -- echo 'devel	ALL=(ALL)	NOPASSWD: ALL' > /etc/sudoers.d/devel

## Include some buildtime annotations
buildah config --annotation "com.example.build.host=$(uname -n)" $ctr1
buildah config --env PS1='\[\033[01;30m\](\[\033[01;32m\]container\[\033[01;30m\])\[\033[0m\] [\u@\h \[\033[01;34m\]\W\[\033[0m\]]$ ' $ctr1
buildah config --arch x86_64 $ctr1
buildah config --os RHEL $ctr1
buildah config --author 'Billy Holmes <billy.holmes@redhat.com>' $ctr1

## Run our server and expose the port
# buildah config --cmd "/usr/sbin/httpd -DFOREGROUND" $ctr1
# buildah config --port 80 $ctr1

## Commit this container to an image name
buildah commit $ctr1 $TAG

buildah push $TAG docker-daemon:localhost/$TAG

trap 'clean' EXIT