update Running.md

clarify setup steps; use a single directory to hold all configuration for docker container

docs/Running.md

@@ -1,5 +1,6 @@
 # Running headscale
 
+## Server configuration
 1. Download the headscale binary https://github.com/juanfont/headscale/releases, and place it somewhere in your $PATH or use the docker container
 
    ```shell
@@ -12,8 +13,15 @@
     docker pull ghrc.io/juanfont/headscale:x.x.x
     ``` -->
 
-2. (Optional, you can also use SQLite) Get yourself a PostgreSQL DB running
+2. When running headscale in a docker container, prepare a directory to hold all configuration
 
+   ```shell
+   mkdir config
+   ```
+   
+3. Get yourself a DB
+
+   a) Get a Postgres DB running in docker
    ```shell
    docker run --name headscale \
      -e POSTGRES_DB=headscale
@@ -22,16 +30,22 @@
      -p 5432:5432 \
      -d postgres
    ```
-
-3. Create a WireGuard private key and headscale configuration
-
+   or b) Prepare a SQLite DB file
    ```shell
-   wg genkey > private.key
-
-   cp config.yaml.example config.yaml
+   touch config/db.sqlite
    ```
 
-4. Create a namespace
+4. Create a WireGuard private key, headscale configuration, and a DERP map file. Refer to [tailscale sample](https://raw.githubusercontent.com/tailscale/tailscale/main/net/dnsfallback/dns-fallback-servers.json) for more guidance.
+
+   ```shell
+   wg genkey > config/private.key
+
+   cp config.yaml.[sqlite|postgres].example config/config.yaml
+   
+   cp derp-example.yaml config/derp.yaml
+   ```
+
+5. Create a namespace
 
    ```shell
    headscale namespaces create myfirstnamespace
@@ -39,15 +53,9 @@
 
    or docker:
 
-   the db.sqlite mount is only needed if you use sqlite
-
    ```shell
-   touch db.sqlite
    docker run \
-     -v $(pwd)/private.key:/private.key \
-     -v $(pwd)/config.json:/config.json \
-     -v $(pwd)/derp.yaml:/derp.yaml \
-     -v $(pwd)/db.sqlite:/db.sqlite \
+     -v $(pwd)/config:/etc/headscale/ \
      -p 127.0.0.1:8080:8080 \
      headscale/headscale:x.x.x \
      headscale namespaces create myfirstnamespace
@@ -56,10 +64,10 @@
    or if your server is already running in docker:
 
    ```shell
-   docker exec <container_name> headscale create myfirstnamespace
+   docker exec <container_name> headscale namespaces create myfirstnamespace
    ```
 
-5. Run the server
+6. Run the server
 
    ```shell
    headscale serve
@@ -67,44 +75,38 @@
 
    or docker:
 
-   the db.sqlite mount is only needed if you use sqlite
-
    ```shell
    docker run \
-     -v $(pwd)/private.key:/private.key \
-     -v $(pwd)/config.json:/config.json \
-     -v $(pwd)/derp.yaml:/derp.yaml \
-     -v $(pwd)/db.sqlite:/db.sqlite \
+     -v $(pwd)/config:/etc/headscale/ \
      -p 127.0.0.1:8080:8080 \
      headscale/headscale:x.x.x headscale serve
    ```
+## Nodes configuration
 
-6. If you used tailscale.com before in your nodes, make sure you clear the tailscaled data folder
+If you used tailscale.com before in your nodes, make sure you clear the tailscaled data folder
 
    ```shell
    systemctl stop tailscaled
    rm -fr /var/lib/tailscale
    systemctl start tailscaled
    ```
-
-7. Add your first machine
+### Adding node based on MACHINEKEY
+1. Add your first machine
 
    ```shell
    tailscale up --login-server YOUR_HEADSCALE_URL
    ```
 
-8. Navigate to the URL you will get with `tailscale up`, where you'll find your machine key.
+2. Navigate to the URL returned by `tailscale up`, where you'll find your machine key.
 
-9. In the server, register your machine to a namespace with the CLI
+3. In the server, register your machine to a namespace with the CLI
    ```shell
    headscale -n myfirstnamespace nodes register YOURMACHINEKEY
    ```
    or docker:
    ```shell
    docker run \
-     -v $(pwd)/private.key:/private.key \
-     -v $(pwd)/config.json:/config.json \
-     -v $(pwd)/derp.yaml:/derp.yaml \
+     -v $(pwd)/config:/etc/headscale/ \
      headscale/headscale:x.x.x \
      headscale -n myfirstnamespace nodes register YOURMACHINEKEY
    ```
@@ -113,7 +115,7 @@
    docker exec <container_name> headscale -n myfirstnamespace nodes register YOURMACHINEKEY
    ```
 
-Alternatively, you can use Auth Keys to register your machines:
+### Alternative: adding node with AUTHKEY
 
 1. Create an authkey
 
@@ -125,10 +127,7 @@ Alternatively, you can use Auth Keys to register your machines:
 
    ```shell
    docker run \
-     -v $(pwd)/private.key:/private.key \
-     -v $(pwd)/config.json:/config.json \
-     -v$(pwd)/derp.yaml:/derp.yaml \
-     -v $(pwd)/db.sqlite:/db.sqlite \
+     -v $(pwd)/config:/etc/headscale/ \
      headscale/headscale:x.x.x \
      headscale -n myfirstnamespace preauthkeys create --reusable --expiration 24h
    ```
@@ -139,7 +138,7 @@ Alternatively, you can use Auth Keys to register your machines:
    docker exec <container_name> headscale -n myfirstnamespace preauthkeys create --reusable --expiration 24h
    ```
 
-2. Use the authkey from your machine to register it
+2. Use the authkey on your node to register it
    ```shell
    tailscale up --login-server YOUR_HEADSCALE_URL --authkey YOURAUTHKEY
    ```