[Watchdog, Config] Added WATCHDOG_NOTIFY_BAN to disable IP ban notifications

[Netfilter] Remove unused files after installation
[Compose] Some new images and a new option for watchdog: WATCHDOG_NOTIFY_BAN - defaults to y

data/Dockerfiles/netfilter/Dockerfile

@@ -5,9 +5,10 @@ ENV XTABLES_LIBDIR /usr/lib/xtables
 ENV PYTHON_IPTABLES_XTABLES_VERSION 12
 ENV IPTABLES_LIBDIR /usr/lib
 
-RUN apk add -U python3 python3-dev gcc musl-dev iptables ip6tables tzdata \
+RUN apk add --virtual .build-deps gcc python3-dev musl-dev libffi-dev openssl-dev \
+  && apk add -U python3 iptables ip6tables tzdata \
   && pip3 install --upgrade python-iptables==0.13.0 redis ipaddress dnspython \
-  && apk del python3-dev gcc
+  && apk del .build-deps
 
 COPY server.py /
 CMD ["python3", "-u", "/server.py"]

data/Dockerfiles/watchdog/watchdog.sh

@@ -687,8 +687,8 @@ while true; do
     for host in "${F2B_RES[@]}"; do
       log_msg "Banned ${host}"
       rm /tmp/fail2ban 2> /dev/null
-      whois ${host} > /tmp/fail2ban 
-      [[ ! -z ${WATCHDOG_NOTIFY_EMAIL} ]] && mail_error "${com_pipe_answer}" "IP ban: ${host}"
+      whois ${host} > /tmp/fail2ban
+      [[ ! -z ${WATCHDOG_NOTIFY_EMAIL} ]] && [[ ${WATCHDOG_NOTIFY_BAN} =~ ^([yY][eE][sS]|[yY])+$ ]] && mail_error "${com_pipe_answer}" "IP ban: ${host}"
     done
   elif [[ ${com_pipe_answer} =~ .+-mailcow ]]; then
     kill -STOP ${BACKGROUND_TASKS[*]}