Update readme

README.md

@@ -5,6 +5,21 @@ pushing notifications to *ntfy.sh* or private instances of ntfy.
 
 This daemon does **not** support subscriptions for now, only publishing.
 
+> [!IMPORTANT]
+> This is not a replacement for ntfy.sh, it is a complement to avoid having to
+> configure multiple services in a stack, and to create abstractions for topic
+> names.
+
+## Building
+
+Ntfi is built using **box**. You can compile it right away with `box compile`,
+but the recommended way is using the Makefile to ensure the version information
+is included:
+
+```bash
+$ make phar
+```
+
 ## Using
 
 Bare metal (Linux):
@@ -33,6 +48,7 @@ as the `compose.yaml` file.
 services:
   ntfi:
     image: dev.noccylabs.info/noccylabs/ntfi:latest
+    # only include ports if you need to publish from outside of the stack
     ports:
       - 13000:13000
     volumes:
@@ -54,7 +70,7 @@ default configuration defines a single server, `default` which is configured
 to send messages to *ntfy.sh* as an anonymous user.
 
 | Key         | Req | Detail
-| --- | --- | ---
+| ----------- | :-: | ------------------------------------------------
 | `server`    | Y   | The server name without protocol (always https)
 | `token`     | \-  | API token to use when authenticating
 | `username`  | \-  | Username for authenticating
@@ -71,7 +87,7 @@ These are the channels that can be sent to. Each channel name matches the reques
 URL, and placeholders can be used to extract and reassemble a destination topic.
 
 | Key            | Req | Detail
-| --- | --- | ---
+| -------------- | :-: | ---------------------------------------------
 | `destination`  | Y   | The destination, as `<server>/<topic>`
 
 Examples: