fix IMAP

php-fpm/Dockerfile

@@ -885,12 +885,12 @@ RUN if [ ${INSTALL_SMB} = true ]; then \
 
 ARG INSTALL_IMAP=false
 
-RUN if [ "$INSTALL_IMAP" = "true" ] \
-   && [ "$LARADOCK_PHP_VERSION" != "8.4" ] \
-   && [ "$LARADOCK_PHP_VERSION" != "8.5" ]; then \
+RUN if [ "$INSTALL_IMAP" = "true" ]; then \
+  if [ "$(lsb_release -rs)" != "13" ]; then \
     apt-get install -yqq libc-client-dev libkrb5-dev && \
     docker-php-ext-configure imap --with-kerberos --with-imap-ssl && \
     docker-php-ext-install imap; \
+  fi; \
 fi
 
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