Postfix: Split TLSPol companion app into separate container (#6688)

* postfix: split postfix-tlspol service into new container

* postfix-tls-pol: added debug mode

* pf-tlspol: removed obsoleted standalone conf from Dockerfiles

* pf-tlspol: use git instead of wget

data/Dockerfiles/postfix-tlspol/postfix-tlspol.sh

@@ -0,0 +1,52 @@
+#!/bin/bash
+
+LOGLVL=info
+
+if [ ${DEV_MODE} != "n" ]; then
+  echo -e "\e[31mEnabling debug mode\e[0m"
+  set -x
+  LOGLVL=debug
+fi
+
+[[ ! -d /etc/postfix-tlspol ]] && mkdir -p /etc/postfix-tlspol
+[[ ! -d /var/lib/postfix-tlspol ]] && mkdir -p /var/lib/postfix-tlspol
+
+until dig +short mailcow.email > /dev/null; do
+  echo "Waiting for DNS..."
+  sleep 1
+done
+
+# Do not attempt to write to slave
+if [[ ! -z ${REDIS_SLAVEOF_IP} ]]; then
+  export REDIS_CMDLINE="redis-cli -h ${REDIS_SLAVEOF_IP} -p ${REDIS_SLAVEOF_PORT} -a ${REDISPASS} --no-auth-warning"
+else
+  export REDIS_CMDLINE="redis-cli -h redis -p 6379 -a ${REDISPASS} --no-auth-warning"
+fi
+
+until [[ $(${REDIS_CMDLINE} PING) == "PONG" ]]; do
+  echo "Waiting for Redis..."
+  sleep 2
+done
+
+echo "Waiting for Postfix..."
+until ping postfix -c1 > /dev/null; do
+  sleep 1
+done
+echo "Postfix OK"
+
+cat <<EOF > /etc/postfix-tlspol/config.yaml
+server:
+  address: 0.0.0.0:8642
+
+  log-level: ${LOGLVL}
+
+  prefetch: true
+
+  cache-file: /var/lib/postfix-tlspol/cache.db
+
+dns:
+  # must support DNSSEC
+  address: 127.0.0.11:53
+EOF
+
+/usr/local/bin/postfix-tlspol -config /etc/postfix-tlspol/config.yaml