getting a little closer to making this work with docker

.env.example

@@ -1,4 +1,4 @@
 PB_ADMIN_EMAIL=admin@example.com
 PB_ADMIN_PASSWORD=secret-password
-PUBLIC_PB_URL=http://pb:8080
+PUBLIC_URL=http://your.domain.tld/
 PB_DATA_DIR=/pb/pb_data

astro.config.mjs

@@ -5,6 +5,10 @@ import node from '@astrojs/node';
 
 import tailwindcss from '@tailwindcss/vite';
 
+import { loadEnv } from "vite";
+
+const { PUBLIC_PB_URL } = loadEnv(process.env.NODE_ENV, process.cwd(), "");
+
 // https://astro.build/config
 export default defineConfig({
   output: 'server',
@@ -18,7 +22,7 @@ export default defineConfig({
     server: {
       proxy: {
         '/api': {
-          target: 'http://localhost:8080',
+          target: PUBLIC_PB_URL,
           changeOrigin: true,
           rewrite: (path) => path.replace(/^\/api/, '/api'),
         },