prepare.sh

#!/usr/bin/env bash

set -eu -o pipefail

VERSION=""

while getopts ":s:" opt ; do
    case ${opt} in
        s)
            VERSION="${OPTARG}";
            ;;
        \?)
            echo "Invalid option: -${OPTARG}"
            ;;
    esac;
done;

shift $((OPTIND-1))

if [ -z "${VERSION}" ]; then
    >&2 echo "-s is required";
    exit 1
fi;

VERSIONS="5.6/fpm 7.0/fpm 7.1/fpm 7.2/fpm 7.3/fpm 7.4/fpm 8.0/fpm 8.1/fpm 8.2/fpm 8.3/fpm"

if echo "$VERSIONS" | grep -v "\( \|^\)$VERSION\( \|$\)" &> /dev/null; then
  >&2 echo "version $VERSION is not supported" 
  exit 1
fi

for V in ${VERSIONS}; do
    if [ "${V}" == "${VERSION}" ]; then
        if [ -d "build/${V}" ]; then
            rm -rf "build/${V}"
        fi;
        mkdir -p "build/${V}"
    fi;
done;

if [ "${VERSION}" != "" ] && [ -d build/${VERSION} ]; then
    cp -R common/. build/${VERSION}/.
    cp -R ${VERSION}/. build/${VERSION}/.
    cd build/${VERSION}/

    cp "Dockerfile.tpl" "Dockerfile"

    PHP_EXT_GROUP_ALL_PATH="args/PHP_EXT_GROUP_ALL"
    PECL_EXT_GROUP_ALL_PATH="args/PECL_EXT_GROUP_ALL"
    TAG_PATH="TAG"

    if [ ! -f "${PHP_EXT_GROUP_ALL_PATH}" ]; then
        >&2 echo "Missing required file: ${PWD}/${PHP_EXT_GROUP_ALL_PATH}";
        exit 1;
    fi;
    if [ ! -f "${PECL_EXT_GROUP_ALL_PATH}" ]; then
        >&2 echo "Missing required file: ${PWD}/${PECL_EXT_GROUP_ALL_PATH}";
        exit 1;
    fi;


    TAG=$(cat "${TAG_PATH}")
    dockerfile_content="$(cat Dockerfile)"
    dockerfile_content="$(
      echo "$dockerfile_content" \
      | awk -v "tag=$TAG" '{ gsub("{{TAG}}", tag, $0); print $0 }'
    )"

    declare -A BUILD_ARGS;
    BUILD_ARGS=(
        [PHP_EXT_GROUP_ALL]="args/PHP_EXT_GROUP_ALL"
        [PECL_EXT_GROUP_ALL]="args/PECL_EXT_GROUP_ALL"
    );

    BUILD_ARGS_STR="";
    for ARG_NAME in ${!BUILD_ARGS[@]}; do
        ARG_VAL="\\\\\\n";
        for i in $(cat "${BUILD_ARGS[${ARG_NAME}]}"); do
            ARG_VAL="${ARG_VAL}${i} \\\\\\n";
        done;
        BUILD_ARGS_STR="${BUILD_ARGS_STR}\nARG ${ARG_NAME}=\"${ARG_VAL}\""
    done;

    dockerfile_content="$(
      echo "$dockerfile_content" \
      | awk -v "args=$BUILD_ARGS_STR" '{ gsub("{{ARGS}}", args, $0); print $0 }'
    )"
    
    FIX_APT_STR=""
    if [[ "$TAG" == "5.6-fpm" || "$TAG" == "7.0-fpm" ]]; then
      FIX_APT_STR='RUN echo "deb http://archive.debian.org/debian stretch main" > /etc/apt/sources.list'
    fi
    dockerfile_content="$(
      echo "$dockerfile_content" \
      | awk -v "fix_apt=$FIX_APT_STR" '{ gsub("{{FIX_APT}}", fix_apt, $0); print $0 }'
    )"
    
    echo "$dockerfile_content" > Dockerfile
fi;