detect zone updates + execute bind-reload-now

Dockerfile

@@ -7,6 +7,7 @@ RUN set -eux; \
 		pdns-backend-bind \
 		sqlite3 \
 		bind9-dnsutils \
+		inotify-tools \
 	; \
 	rm -rf /var/lib/apt/lists/*
 

start.sh

@@ -1,3 +1,11 @@
 #!/bin/sh
 
-exec /usr/sbin/pdns_server --guardian=no --daemon=no --disable-syslog --log-timestamp=no --write-pid=no
+/usr/sbin/pdns_server --guardian=no --daemon=no --disable-syslog --log-timestamp=no --write-pid=no &
+
+inotifywait -mqre modify --exclude '\.git' --format '%w%f' "/var/lib/powerdns/zones/" |
+    while read -r path; do
+        zone=$(basename $path)
+        echo [$0] A modification was detected in $path
+        echo [$0] Executing \`/usr/bin/pdns_control bind-reload-now $zone\`
+        /usr/bin/pdns_control bind-reload-now $zone
+    done