Updated Postfix to version 3.7.2 with Alpine 3.16. Fixed issue with comments and blank lines in overrides

Dockerfile

@@ -1,4 +1,4 @@
-FROM alpine:3.15
+FROM alpine:3.16
 LABEL MAINTAINER="Fabio Rauber <fabiorauber@gmail.com>"
 
 RUN apk add --no-cache bash postfix postfix-pcre 
@@ -7,8 +7,6 @@ COPY conf /etc/postfix
 
 VOLUME ["/var/spool/postfix"]
 
-ENTRYPOINT ["etc/postfix/postfix-service.sh"]
+ENTRYPOINT ["/etc/postfix/postfix-service.sh"]
-
-CMD [ "start" ]
 
 EXPOSE 25

conf/postfix-service.sh

@@ -14,7 +14,7 @@ function serviceConf {
   # Override Postfix configuration
   if [ -f /overrides/postfix.cf ]; then
     while read line; do
-      postconf -e "$line"
+      [[ -n "$line" && "$line" != [[:blank:]#]* ]] && postconf -e "$line"
     done < /overrides/postfix.cf
     echo "Loaded '/overrides/postfix.cf'"
   else

docker-compose.yml

@@ -4,5 +4,4 @@ services:
     build: .
     ports:
       - 25
-    entrypoint: /bin/bash
+    tty: true
-    tty: true