add php 8.4

bump other php version, bump composer version

v8.4/Dockerfile

@@ -0,0 +1,30 @@
+FROM php:8.4.1-alpine
+
+ARG COMPOSER_VERSION
+ARG PHP_XDEBUG_VERSION
+
+RUN apk update && apk add --no-cache $PHPIZE_DEPS \
+    && apk add --no-cache zlib-dev gd-dev libwebp-dev freetype-dev libpng-dev libjpeg-turbo-dev \
+        curl zip libzip-dev gmp-dev linux-headers \
+        imap-dev openssl-dev git zsh \
+    && docker-php-ext-configure gd --enable-gd \
+        --with-freetype \
+        --with-jpeg \
+        --with-webp \
+    && docker-php-ext-install gd \
+    && docker-php-ext-configure bcmath && docker-php-ext-install bcmath \
+    && docker-php-ext-configure zip --with-zip && docker-php-ext-install zip \
+    && docker-php-ext-install gmp \
+    && PHP_OPENSSL=yes docker-php-ext-configure imap --with-imap-ssl \
+    && docker-php-ext-install imap \
+    && pecl install xdebug-${PHP_XDEBUG_VERSION} && docker-php-ext-enable xdebug \
+    && apk del $PHPIZE_DEPS \
+        zlib-dev libwebp-dev freetype-dev libpng-dev libjpeg-turbo-dev openssl-dev
+
+# Install composer
+RUN curl -sS https://getcomposer.org/installer | php -- \
+        --filename=composer \
+        --version=${COMPOSER_VERSION} \
+        --install-dir=/usr/local/bin
+RUN mkdir -m 777 -p /var/composer/
+ENV COMPOSER_HOME /var/composer/