use env instead of cmd args

README.md

@@ -1,6 +1,6 @@
 # SimpleLink
 
-A very performant and light (2MB in memory) link shortener and tracker. Written in Rust and React and uses Postgres.
+A very performant and light (2MB in memory) link shortener and tracker. Written in Rust and React and uses Postgres or SQLite.
 
 ![MainView](readme_img/mainview.jpg)
 
@@ -10,20 +10,30 @@ A very performant and light (2MB in memory) link shortener and tracker. Written
 
 ### From Docker:
 
-```Bash
+```bash
 docker run -p 8080:8080 \
     -e JWT_SECRET=change-me-in-production \
+    -e SIMPLELINK_USER=admin@example.com \
+    -e SIMPLELINK_PASS=your-secure-password \
     -v simplelink_data:/data \
     ghcr.io/waveringana/simplelink:v2
 ```
 
-Find the admin-setup-token pasted into the terminal output, or in admin-setup-token.txt in the container's root.
+### Environment Variables
 
-This is needed to register with the frontend. (TODO, register admin account with ENV)
+- `JWT_SECRET`: Required. Used for JWT token generation
+- `SIMPLELINK_USER`: Optional. If set along with SIMPLELINK_PASS, creates an admin user on first run
+- `SIMPLELINK_PASS`: Optional. Admin user password
+- `DATABASE_URL`: Optional. Postgres connection string. If not set, uses SQLite
+- `INITIAL_LINKS`: Optional. Semicolon-separated list of initial links in format "url,code;url2,code2"
+- `SERVER_HOST`: Optional. Default: "127.0.0.1"
+- `SERVER_PORT`: Optional. Default: "8080"
+
+If `SIMPLELINK_USER` and `SIMPLELINK_PASS` are not passed, an admin-setup-token is pasted to the console and as a text file in the project root.
 
 ### From Docker Compose:
 
-Edit the docker-compose.yml file. It comes included with a postgressql db for use
+Edit the docker-compose.yml file. It comes included with a PostgreSQL db configuration.
 
 ## Build
 
@@ -31,17 +41,13 @@ Edit the docker-compose.yml file. It comes included with a postgressql db for us
 
 First configure .env.example and save it to .env
 
-If DATABASE_URL is set, it will connect to a Postgres DB. If blank, it will use an sqlite db in /data
-
 ```bash
 git clone https://github.com/waveringana/simplelink && cd simplelink
 ./build.sh
 cargo run
 ```
 
-On an empty database, an admin-setup-token.txt is created as well as pasted into the terminal output. This is needed to make the admin account.
-
-Alternatively if you want a binary form
+Alternatively for a binary build:
 
 ```bash
 ./build.sh --binary
@@ -55,6 +61,8 @@ then check /target/release for the binary named `SimpleGit`
 docker build -t simplelink .
 docker run -p 8080:8080 \
     -e JWT_SECRET=change-me-in-production \
+    -e SIMPLELINK_USER=admin@example.com \
+    -e SIMPLELINK_PASS=your-secure-password \
     -v simplelink_data:/data \
     simplelink
 ```
@@ -62,3 +70,11 @@ docker run -p 8080:8080 \
 ### From Docker Compose
 
 Adjust the included docker-compose.yml to your liking; it includes a postgres config as well.
+
+## Features
+
+- Support for both PostgreSQL and SQLite databases
+- Initial links can be configured via environment variables
+- Admin user can be created on first run via environment variables
+- Link click tracking and statistics
+- Lightweight and performant