📝 Added env vars to README

README.md

@@ -34,16 +34,12 @@ You can find a list of all image tags [here](https://github.com/lukecarr/tiny-to
 
 This starts the tiny-todo server.
 
-By default, the server will listen on `:3000`; this can be changed by setting the `ADDR` environment variable.
-
 > You might see a warning about "Launching in in-memory mode" when running this command. Please read [Data persistence](#data-persistence) for more information.
 
 ### `migrate`
 
 This performs the necessary SQLite migrations.
 
-When running this command, you must set the `SQLITE_DB` environment variable to the path of an SQLite `.db` file (it will be created if missing).
-
 ## Data persistence
 
 **By default, tiny-todo launches in an "in-memory mode", where data does not persist across restarts.**
@@ -58,6 +54,26 @@ To ensure that you're aware of tiny-todo's data persistence behaviour, a warning
 11:44AM WRN Launching in in-memory mode as 'SQLITE_DB' environment variable wasn't set. Data will be lost on shutdown! Hint="SQLITE_DB=todo.db ./tiny-todo serve"
 ```
 
+## Environment variables
+
+### `ADDR`
+
+Indicates the address that tiny-todo will listen on.
+
+By default, this is `:3000`.
+
+### `SQLITE_DB`
+
+The path of the SQLite database file to use for storing persistent data.
+
+If not set, tiny-todo will launch in an "in-memory mode", and data will not persist across restarts.
+
+### `LOG_LEVEL`
+
+Sets the level of logs that will be displayed when launching tiny-todo.
+
+By default, this is `info`. It can be one of `panic`, `fatal`, `error`, `warn`, `info`, `debug`, or `trace`.
+
 ## Examples
 
 We curate a multitude of examples for running tiny-todo in the [examples directory](examples)!