build: update to bullseye base image

Dockerfile

@@ -1,10 +1,10 @@
-FROM php:7.4.12-apache
+FROM php:8.1.11-apache-bullseye
 
 ARG RAINLOOP_VERSION=1.17.0
 
 ARG DEBIAN_FRONTEND=noninteractive
-ARG RAINLOOP_URL=https://github.com/RainLoop/rainloop-webmail/releases/download/v${RAINLOOP_VERSION}/rainloop-community-${RAINLOOP_VERSION}.zip
-ARG RAINLOOP_URL_ASC=https://github.com/RainLoop/rainloop-webmail/releases/download/v${RAINLOOP_VERSION}/rainloop-community-${RAINLOOP_VERSION}.zip.asc
+ARG RAINLOOP_URL=https://github.com/RainLoop/rainloop-webmail/releases/download/v${RAINLOOP_VERSION}/rainloop-legacy-${RAINLOOP_VERSION}.zip
+ARG RAINLOOP_URL_ASC=https://github.com/RainLoop/rainloop-webmail/releases/download/v${RAINLOOP_VERSION}/rainloop-legacy-${RAINLOOP_VERSION}.zip.asc
 ARG RAINLOOP_PGP_PUBLIC_KEY=https://www.rainloop.net/repository/RainLoop.asc 
 ARG RAINLOOP_GPG_FINGERPRINT="3B79 7ECE 694F 3B7B 70F3  11A4 ED7C 49D9 87DA 4591"
 
@@ -23,19 +23,19 @@ RUN sed -ri -e "s!/var/www/html!${APACHE_DOCUMENT_ROOT}!g" /etc/apache2/sites-av
 RUN sed -ri -e "s!/var/www/!${APACHE_DOCUMENT_ROOT}!g" /etc/apache2/apache2.conf /etc/apache2/conf-available/*.conf
 
 RUN apt-get update -qq \
-    && apt-get install -q -y --no-install-recommends unzip=6.0-23+deb10u2 wget=1.20.1-1.1 gpg=2.2.12-1+deb10u2 gpg-agent=2.2.12-1+deb10u2 \
+    && apt-get install -q -y --no-install-recommends unzip=6.0-26+deb11u1 wget=1.21-1+deb11u1 gpg=2.2.27-2+deb11u2 gpg-agent=2.2.27-2+deb11u2 \
     && apt-get clean \
     && rm -rf /var/lib/apt/lists/* \
     &&  wget -q ${RAINLOOP_PGP_PUBLIC_KEY} \
     && wget -q ${RAINLOOP_URL_ASC} \
     && wget -q ${RAINLOOP_URL} \
     && gpg --import RainLoop.asc \
-    && FINGERPRINT="$(LANG=C gpg --verify rainloop-community-${RAINLOOP_VERSION}.zip.asc rainloop-community-${RAINLOOP_VERSION}.zip 2>&1 \
+    && FINGERPRINT="$(LANG=C gpg --verify rainloop-legacy-${RAINLOOP_VERSION}.zip.asc rainloop-legacy-${RAINLOOP_VERSION}.zip 2>&1 \
       | sed -n "s#Primary key fingerprint: \(.*\)#\1#p")" \
     && if [ -z "${FINGERPRINT}" ]; then echo "ERROR: Invalid GPG signature!" && exit 1; fi \
     && if [ "${FINGERPRINT}" != "${RAINLOOP_GPG_FINGERPRINT}" ]; then echo "ERROR: Wrong GPG fingerprint!" && exit 1; fi \
     &&  mkdir ${APACHE_DOCUMENT_ROOT} \
-    && unzip -q /tmp/rainloop-community-${RAINLOOP_VERSION}.zip -d ${APACHE_DOCUMENT_ROOT} \
+    && unzip -q /tmp/rainloop-legacy-${RAINLOOP_VERSION}.zip -d ${APACHE_DOCUMENT_ROOT} \
     && apt-get purge -q -y unzip wget gpg gpg-agent \
     && apt-get autoremove -y \
     && rm -rf /tmp/*