trim whitespace from /etc/timezone

CHANGELOG.md

@@ -6,6 +6,10 @@ changes, see Git history.
 Each release is tagged in Git and on the Docker repository
 [`scottlamb/moonfire-nvr`](https://hub.docker.com/r/scottlamb/moonfire-nvr).
 
+## unreleased
+
+*   trim whitespace when detecting time zone by reading `/etc/timezone`.
+
 ## `v0.6.6` (2021-09-23)
 
 *   fix [#146](https://github.com/scottlamb/moonfire-nvr/issues/146): "init

server/src/cmds/run.rs

@@ -149,9 +149,9 @@ fn resolve_zone() -> Result<String, Error> {
         }
     };
 
-    // If `TIMEZONE_PATH` is a file, use its contents as the zone name.
+    // If `TIMEZONE_PATH` is a file, use its contents as the zone name, trimming whitespace.
     match ::std::fs::read_to_string(TIMEZONE_PATH) {
-        Ok(z) => Ok(z),
+        Ok(z) => Ok(z.trim().to_owned()),
         Err(e) => {
             bail!(
                 "Unable to resolve timezone from TZ env, {}, or {}. Last error: {}",