[fix] proxy and certbot now exit properly with code 0

- also fixed (currently not used) saving log to file

certbot/files/entrypoint.sh

@@ -40,11 +40,27 @@ function log()
             echo "[$time]:[$prefix]:[$0][$func]: $@" 2>&1
             ;;
         *)
-            echo "[$time]:[$prefix]:[$0][$func]: $@" >> log_path
+            echo "[$time]:[$prefix]:[$0][$func]: $@" >> $log_file
             ;;
     esac
 }
 
+function sleep_wait()
+{
+    # waiting on sleep to be able to handle SIGTERM
+    sleep $1 &
+    wait $!
+}
+
+function exit_handler()
+{
+    log exit_handler "container shutting down"
+    exit
+}
+
+trap "exit_handler" SIGINT
+trap "exit_handler" SIGTERM
+
 function env_domain_file()
 {
     log env_domain_file $(echo "ENV DOMAINS: $DOMAINS" | tr '\n' '#' | sed 's|#|\\n |g')
@@ -135,7 +151,7 @@ function get_cert()
     while [ ! $webserver_exists -eq 1 ] && [ "$retries" -lt "$server_retries" ]; do
         retries=$(( retries+1 ))
         log get_cert WARNING "Webserver for [$root_domain] not reachable, trying again in 1s"
-        sleep 1
+        sleep_wait 1
         verify_local_webserver $root_domain && webserver_exists=1
     done
     
@@ -256,7 +272,7 @@ function main()
         
         log main "Ending intervall"
         log main "Next interval in $intervall"
-        sleep "$intervall"
+        sleep_wait "$intervall"
     done
 }