Bump nginx from 3.18 to 3.21

Bump php from 8.2 to 8.3

Dockerfile

@@ -1,13 +1,11 @@
 # syntax=docker/dockerfile:1
 
-FROM ghcr.io/linuxserver/baseimage-alpine-nginx:3.18
+FROM ghcr.io/linuxserver/baseimage-alpine-nginx:3.21
 
 # set version label
 ARG BUILD_DATE
 ARG VERSION
 ARG NGINX_VERSION
-LABEL build_version="Linuxserver.io version:- ${VERSION} Build-date:- ${BUILD_DATE}"
-LABEL maintainer="aptalca"
 
 # install packages
 RUN \
@@ -17,19 +15,19 @@ RUN \
   fi && \
 
   apk add --no-cache --repository=http://dl-cdn.alpinelinux.org/alpine/edge/community \
-    php82-pecl-mcrypt && \
+    php83-pecl-mcrypt && \
   echo "**** configure php-fpm to pass env vars ****" && \
-  sed -E -i 's/^;?clear_env ?=.*$/clear_env = no/g' /etc/php82/php-fpm.d/www.conf && \
-  grep -qxF 'clear_env = no' /etc/php82/php-fpm.d/www.conf || echo 'clear_env = no' >> /etc/php82/php-fpm.d/www.conf && \
-  echo "env[PATH] = /usr/local/bin:/usr/bin:/bin" >> /etc/php82/php-fpm.conf
+  sed -E -i 's/^;?clear_env ?=.*$/clear_env = no/g' /etc/php83/php-fpm.d/www.conf && \
+  grep -qxF 'clear_env = no' /etc/php83/php-fpm.d/www.conf || echo 'clear_env = no' >> /etc/php83/php-fpm.d/www.conf && \
+  echo "env[PATH] = /usr/local/bin:/usr/bin:/bin" >> /etc/php83/php-fpm.conf
 
 # install sockets
 RUN apk add --no-cache \
-  php82-sockets
+  php83-sockets
 
 # install sqlite3
 RUN apk add --no-cache \
-  php82-sqlite3
+  php83-sqlite3
 
 # add regctl for container digest checks
 ARG TARGETARCH