and now we have .env file support

.env.sample

@@ -0,0 +1 @@
+DATABASE_URL=sqlite:db.sqlite

Cargo.lock

@@ -389,6 +389,7 @@ version = "0.1.0"
 dependencies = [
  "anyhow",
  "async-std",
+ "dotenv",
  "html-escape",
  "rocket",
  "sqlx",
@@ -534,6 +535,12 @@ dependencies = [
  "subtle",
 ]
 
+[[package]]
+name = "dotenv"
+version = "0.15.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "77c90badedccf4105eca100756a0b1289e191f6fcbdadd3cee1d2f614f97da8f"
+
 [[package]]
 name = "dotenvy"
 version = "0.15.7"

Cargo.toml

@@ -8,6 +8,7 @@ edition = "2021"
 [dependencies]
 anyhow = "1.0.82"
 async-std = { version = "1.12.0", features = ["attributes"] }
+dotenv = "0.15.0"
 html-escape = "0.2.13"
 rocket = "0.5.0"
 sqlx = { version = "0.7", features = ["runtime-async-std", "sqlite", "migrate"] }

src/main.rs

@@ -112,6 +112,7 @@ async fn add(
 
 #[rocket::launch]
 async fn rocket() -> _ {
+    dotenv::dotenv().ok();
     let db_url = env::var("DATABASE_URL").expect("DATABASE_URL is required");
     let pool = SqlitePool::connect(&db_url)
         .await