rpmbuilder-docker

#!/usr/bin/env bash
# shellcheck disable=SC2034

################################################################################

NORM=0
BOLD=1
UNLN=4
RED=31
GREEN=32
YELLOW=33
BLUE=34
MAG=35
CYAN=36
GREY=37
DARK=90

CL_NORM="\e[0m"
CL_BOLD="\e[0;${BOLD};49m"
CL_UNLN="\e[0;${UNLN};49m"
CL_RED="\e[0;${RED};49m"
CL_GREEN="\e[0;${GREEN};49m"
CL_YELLOW="\e[0;${YELLOW};49m"
CL_BLUE="\e[0;${BLUE};49m"
CL_MAG="\e[0;${MAG};49m"
CL_CYAN="\e[0;${CYAN};49m"
CL_GREY="\e[0;${GREY};49m"
CL_DARK="\e[0;${DARK};49m"
CL_BL_RED="\e[1;${RED};49m"
CL_BL_GREEN="\e[1;${GREEN};49m"
CL_BL_YELLOW="\e[1;${YELLOW};49m"
CL_BL_BLUE="\e[1;${BLUE};49m"
CL_BL_MAG="\e[1;${MAG};49m"
CL_BL_CYAN="\e[1;${CYAN};49m"
CL_BL_GREY="\e[1;${GREY};49m"

################################################################################

# Default image repo
IMAGE_REPO="ghcr.io/essentialkaos/rpmbuilder"

# Default image name
DEFAULT_IMAGE="$IMAGE_REPO:ol8"

################################################################################

# Main function
#
# Code: No
# Echo: No
main() {
  if ! hasApp "docker" ; then
    error "You must install Docker runtime first"
    exit 1
  fi

  run "$@"

  exit $?
}

# Run docker image
#
# Code: Yes
# Echo: No
run() {
  local image user_id

  image=$(getImage)
  user_id=$(getUserID)

  if ! hasImage "$image" ; then
    show "\n${CL_BOLD}Pulling image ${CL_BL_BLUE}$image${CL_NORM}${CL_BOLD}…${CL_NORM}\n"

    if ! docker pull "$image" ; then
      exit 1
    fi
  fi

  show "\nIMAGE: $image" $DARK

  docker run --rm -e LOCAL_USER_ID="$user_id" -v "$(pwd):/rpmbuilder" "$image" rpmbuilder "$@"

  return $?
}

# Get target image for using
#
# Code: No
# Echo: Image name (String)
getImage() {
  local image="${IMAGE:-$DEFAULT_IMAGE}"

  if [[ ! $image =~ \: ]] ; then
    image="$IMAGE_REPO:$IMAGE"
  fi

  echo "$image"
}

# Get current user ID
#
# Code: No
# Echo: User ID (Number)
getUserID() {
  local user_id

  user_id=$(id -u)

  if [[ $user_id -eq 0 ]] ; then
    user_id="${SUDO_UID:-0}"
  fi

  echo "$user_id"
}

# Check if image already pulled
#
# 1: Image name (String)
#
# Code: Yes
# Echo: No
hasImage() {
  if [[ -n $(docker images -q "$1" 2> /dev/null) ]] ; then
    return 0
  fi

  return 1
}

# Check if some app is installed
#
# 1: Binray name (String)
#
# Code: Yes
# Echo: No
hasApp() {
  type "$1" &> /dev/null
  return $?
}

# Show message
#
# 1: Message (String)
# 2: Message color (Number) [Optional]
#
# Code: No
# Echo: No
show() {
  if [[ -n "$2" && -z "$no_colors" ]] ; then
    echo -e "\e[${2}m${1}\e[0m"
  else
    echo -e "$*"
  fi
}

# Print error message
#
# 1: Message (String)
# 2: Message color (Number) [Optional]
#
# Code: No
# Echo: No
error() {
  show "$*" $RED 1>&2
}

################################################################################

main "$@"