Update build script.

Makefile

@@ -1,2 +1,8 @@
-all:
-	node build.mjs
+watch: install
+	NODE_ENV=development node build.mjs
+
+install:
+	npm install
+
+build: install
+	NODE_ENV=production node build.mjs

README.md

@@ -1,5 +1,4 @@
-Makerspace Task List
-====================
+# Makerspace Task List
 
 Takes a public Trello board and shows it as a nice list, suitable for printing on A4 paper.
 
@@ -9,4 +8,18 @@ The page header, date and extra text to the right, is editable directly in the b
 
 At the top one can select both which board to use, and which lists from that board to include. These settings are hidden when printing.
 
-![Screenshot](./docs/screenshot.png)
+![Screenshot](./docs/screenshot.png)
+
+## Usage
+
+Development mode:
+
+```bash
+make watch
+```
+
+Production build:
+
+```bash
+make build
+```

build.mjs

@@ -11,11 +11,17 @@ const ctx = await esbuild.context({
     outdir: 'dist',
 });
 
-let { host, port } = await ctx.serve({
-    servedir: 'dist',
-    onRequest: () => {
-    }
-});
+if (process.env.NODE_ENV === 'production') {
+    await ctx.rebuild();
+    console.log('Build succeeded.');
+    process.exit(0);
+} else {
+    let { host, port } = await ctx.serve({
+        servedir: 'dist',
+        onRequest: () => {
+        }
+    });
 
-console.log('Build succeeded. Serving on http://' + host + ':' + port);
-console.log("Watching for changes...");
+    console.log('Build succeeded. Serving on http://' + host + ':' + port);
+    console.log("Watching for changes...");
+}