Use PHP 7.4 for bullseye

bullseye_php7/Dockerfile-base

@@ -8,20 +8,22 @@ RUN apt-get update \
     dumb-init \
     libnss-ldap \
     nullmailer \
-    php-curl \
-    php-fpm \
-    php-gd \
-    php-imagick \
-    php-imap \
-    php-json \
-    php-mail \
     php-mail-mime \
-    php-mbstring \
     php-net-smtp \
     php-net-socket \
-    php-opcache \
-    php-pspell \
-    php-sqlite3 \
+    php-mail \
+    php7.4 \
+    php7.4-curl \
+    php7.4-fpm \
+    php7.4-fpm \
+    php7.4-gd \
+    php7.4-imagick \
+    php7.4-imap \
+    php7.4-json \
+    php7.4-mbstring \
+    php7.4-opcache \
+    php7.4-pspell \
+    php7.4-sqlite3 \
     psmisc \
     && apt-get clean \
     && rm -rf /var/lib/apt/lists/*.*