Better error handling when .env not set

docker-compose.yml

@@ -7,7 +7,6 @@ services:
         - 8000:8000
     hostname: crablog
     container_name: crablog
-    env_file: ./crablog.env
     restart: unless-stopped
     volumes:
       - ./content:/app/content

site/src/config.rs

@@ -21,7 +21,14 @@ pub struct Accounts {
 }
 
 fn load_config() -> Config {
-    dotenv().expect(".env file not found");
+    match dotenv() {
+        Ok(_) => {
+            println!(".env exists, loading environment variables.")
+        }
+        Err(_) => {
+            println!(".env does not exist, possibly the docker image is run which requires to set environment variables manually.")
+        }
+    }
 
     // return config value or panic if not set
     fn eval_required_conf(variable_name: String) -> String {
@@ -31,7 +38,7 @@ fn load_config() -> Config {
                 return value;
             }
             Err(_) => {
-                panic!("{} not set!", variable_name)
+                panic!("Environment variable '{}' not set!", variable_name)
             }
         }
     }
@@ -45,11 +52,11 @@ fn load_config() -> Config {
             }
             Err(_) => match default_value {
                 Some(val) => {
-                    println!("Variable {variable_name} not set. Using default value: {val}.");
+                    println!("Environment variable '{variable_name}' not set. Using default value: {val}.");
                     return Some(String::from(val));
                 }
                 None => {
-                    println!("Variable {variable_name} not set. No default, leaving this empty.");
+                    println!("Environment variable '{variable_name}' not set. No default, leaving this empty.");
                     None
                 }
             },