Sample customization of Docker official PHP image with multistage build

Dockerfile

FROM php:8.4-fpm AS build

RUN apt-get update && apt-get install -y --no-install-recommends \
    libfreetype-dev \
    libjpeg62-turbo-dev \
    libmemcached-dev \
    libpng-dev \
    libpq-dev \
    libsqlite3-dev \
    zlib1g-dev \
 && rm -rf /var/lib/apt/lists/*

RUN docker-php-source extract

WORKDIR /usr/src/php/ext

RUN pecl bundle igbinary \
 && pecl bundle memcached \
 && pecl bundle msgpack \
 && pecl bundle redis \
 && pecl bundle xdebug

ENV PHP_CFLAGS="$PHP_CFLAGS -Os"

RUN docker-php-ext-configure gd --with-freetype --with-jpeg
RUN docker-php-ext-install -j$(nproc) \
    bcmath \
    gd \
    igbinary \
    msgpack \
    pdo_mysql \
    pdo_pgsql \
    pdo_sqlite \
    pgsql \
    redis \
    xdebug

RUN docker-php-ext-configure memcached --enable-memcached-igbinary=yes --enable-memcached-msgpack=yes
RUN docker-php-ext-install -j$(nproc) \
    memcached


FROM scratch AS exts

COPY --from=build /usr/local/lib/php/extensions/no-debug-non-zts-20240924/bcmath.so    /libs/bcmath.so
COPY --from=build /usr/local/lib/php/extensions/no-debug-non-zts-20240924/gd.so        /libs/gd.so
COPY --from=build /usr/local/lib/php/extensions/no-debug-non-zts-20240924/igbinary.so  /libs/igbinary.so
COPY --from=build /usr/local/lib/php/extensions/no-debug-non-zts-20240924/memcached.so /libs/memcached.so
COPY --from=build /usr/local/lib/php/extensions/no-debug-non-zts-20240924/msgpack.so   /libs/msgpack.so
COPY --from=build /usr/local/lib/php/extensions/no-debug-non-zts-20240924/pdo_mysql.so /libs/pdo_mysql.so
COPY --from=build /usr/local/lib/php/extensions/no-debug-non-zts-20240924/pdo_pgsql.so /libs/pdo_pgsql.so
COPY --from=build /usr/local/lib/php/extensions/no-debug-non-zts-20240924/pgsql.so     /libs/pgsql.so
COPY --from=build /usr/local/lib/php/extensions/no-debug-non-zts-20240924/redis.so     /libs/redis.so
COPY --from=build /usr/local/lib/php/extensions/no-debug-non-zts-20240924/xdebug.so    /libs/xdebug.so


FROM php:8.4-fpm AS final

COPY --from=exts /libs/* /usr/local/lib/php/extensions/no-debug-non-zts-20240924/

RUN apt-get update \
 && apt-get install -y --no-install-recommends \
    libfreetype6 \
    libjpeg62-turbo \
    libmemcached11t64 \
    libpng16-16t64 \
    libpq5 \
 && rm -rf /var/lib/apt/lists/*

RUN docker-php-ext-enable \
    bcmath \
    gd \
    igbinary \
    memcached \
    msgpack \
    pdo_mysql \
    pdo_pgsql \
    pgsql \
    redis \
    xdebug