added the prod deployment instructions

README.md

@@ -18,9 +18,33 @@ a profile is
 - microchipped
 - and whatever else i think of
 
-# TODOs
+# Setting it up for prod
 
-- p2: privacy policy and GDPR notice
-- p2: saving register form as it gets filled / re-display it with partial values
-- account
-	- p2: optional email for forgotten password i guess
+The project is [packaged for NixOS](https://nur.nix-community.org/repos/arteneko/); if you don't use NixOS, you will need to compile it yourself with the rust toolchain.
+
+This project requires rust (stable, at least v1.84.0 which is the version i use) and cargo, as well as a postgresql database.
+
+```
+$ git clone https://git.sr.ht/~artemis/dolltags
+$ cd dolltags
+$ cargo build --release
+```
+
+You will also need to bundle the `assets/` and `templates/` directory.
+
+In both cases, the daemon/CLI requires a configuration file, by default named `Rocket.toml` and loaded from the CWD but which can be pointed to a custom file using the `ROCKET_CONFIG` environment variable.
+Likewise, the assets and template directories will be by default loaded from the CWD but can be pointed to a custom directory using the environment variable `ASSETS_PATH`.
+However, the template directory is expected to be in the CWD with no way to change it as-is for now (it will try to search in `$PWD/templates`).
+
+The configuration file requires two keys, shown below.
+
+```toml
+[default]
+secret_key = "use `openssl rand -base64 32` to generate it"
+
+[default.databases.dolltags]
+url = "postgres://dolltags:password@localhost/dolltags"
+```
+
+- `secret_key` is required to securely handle the user sessions; changing the secret key will immediately disconnect any previously-working session
+- `url` for the database follows the PostgreSQL connection URL format and should support all its arguments and variants