Add 'ephemeral' config option

CHANGELOG.md

@@ -16,6 +16,7 @@ Procedure when bumping the version number:
 
 ### Added
 - Config file
+- `ephemeral` config option
 
 ## v0.3.0 - 2022-08-22
 

src/config.rs

@@ -6,7 +6,10 @@ use serde::Deserialize;
 use crate::macros::ok_or_return;
 
 #[derive(Debug, Default, Deserialize)]
-pub struct Config {}
+pub struct Config {
+    #[serde(default)]
+    pub ephemeral: bool,
+}
 
 impl Config {
     pub fn load(path: &Path) -> Self {

src/main.rs

@@ -90,9 +90,13 @@ async fn main() -> anyhow::Result<()> {
         .config
         .unwrap_or_else(|| dirs.config_dir().join("config.toml"));
     println!("Config file: {}", config_path.to_string_lossy());
-    let config = Config::load(&config_path);
+    let mut config = Config::load(&config_path);
 
-    let vault = if args.ephemeral {
+    if args.ephemeral {
+        config.ephemeral = true;
+    }
+
+    let vault = if config.ephemeral {
         vault::launch_in_memory()?
     } else {
         let data_dir = args