Add empty string checks to PORT and BIND_ADDR env vars

server/src/main.rs

@@ -29,13 +29,15 @@ async fn main() -> io::Result<()> {
     if let Ok(env_port) = env::var("PORT") {
         if let Ok(env_port) = env_port.parse::<u16>() {
             port = env_port;
-        } else {
+        } else if !env_port.is_empty() {
             util::warn_println("Failed to parse PORT env variable; using default value.");
         }
     }
 
     if let Ok(env_addr) = env::var("BIND_ADDR") {
-        bind_addr = env_addr;
+        if !env_addr.is_empty() {
+            bind_addr = env_addr;
+        }
     }
 
     util::notice_println("Connecting to DB.");