Reapply "Supports local execution via npx"

This reverts commit daf6eff.

Author: aiqlcom

Dockerfile

@@ -29,8 +29,7 @@ ENV NODE_ENV=production
 # copy production dependencies and source code into final image
 FROM base AS release
 COPY --from=install /temp/prod/node_modules node_modules
-COPY --from=prerelease /usr/src/app/app.js .
-COPY --from=prerelease /usr/src/app/package.json .
+COPY --from=prerelease /usr/src/app .
 
 # run the app
 USER bun

app.js

@@ -1,29 +1,12 @@
-const express = require('express')
-const { createProxyMiddleware } = require('http-proxy-middleware');
-const app = express()
-const port = process.env.PORT || 9017
-const target = process.env.TARGET || 'https://api.openai.com'
+const createProxyApp = require('./core');
+const { defaultPort, defaultTarget } = require('./config');
 
-app.use('/', createProxyMiddleware({
-    target: target,
-    changeOrigin: true,
-    on: {
-        proxyReq: (proxyReq, req, res) => {
-          /* handle proxyReq */
-          proxyReq.removeHeader('x-forwarded-for');
-          proxyReq.removeHeader('x-real-ip');
-        },
-        proxyRes: (proxyRes, req, res) => {
-          /* handle proxyRes */
-          proxyRes.headers['Access-Control-Allow-Origin'] = '*';
-          proxyRes.headers['Access-Control-Allow-Headers'] = 'Origin, X-Requested-With, Content-Type, Accept, Authorization';
-        },
-        error: (err, req, res) => {
-          /* handle error */
-        },
-      },
-}));
+const port = process.env.PORT || defaultPort;
+const target = process.env.TARGET || defaultTarget;
+
+const app = createProxyApp(target);
 
 app.listen(port, () => {
-    console.log(`Proxy agent started: http://localhost:${port}`)
-})
+    console.log(`Proxy agent started: http://localhost:${port}`);
+    console.log(`Target: ${target}`);
+});

cli.js

@@ -0,0 +1,19 @@
+#!/usr/bin/env node
+const createProxyApp = require('./core');
+const { defaultPort, defaultTarget } = require('./config');
+
+const args = process.argv.slice(2);
+const portArg = args.find(arg => arg.startsWith('--port='));
+const targetArg = args.find(arg => arg.startsWith('--target='));
+
+const port = portArg ? portArg.split('=')[1] : defaultPort;
+const target = targetArg ? targetArg.split('=')[1] : defaultTarget;
+
+const app = createProxyApp(target);
+
+app.listen(port, () => {
+    console.log(`OpenAI Proxy running:`);
+    console.log(`Local:   http://localhost:${port}`);
+    console.log(`Target:  ${target}`);
+    console.log(`\nPress Ctrl+C to stop`);
+});

config.js

@@ -0,0 +1,4 @@
+module.exports = {
+    defaultPort: 9017,
+    defaultTarget: 'https://api.openai.com'
+};

core.js

@@ -0,0 +1,27 @@
+const express = require('express');
+const { createProxyMiddleware } = require('http-proxy-middleware');
+
+module.exports = function createProxyApp(target) {
+    const app = express();
+    
+    app.use('/', createProxyMiddleware({
+        target: target,
+        changeOrigin: true,
+        on: {
+            proxyReq: (proxyReq, req, res) => {
+                proxyReq.removeHeader('x-forwarded-for');
+                proxyReq.removeHeader('x-real-ip');
+            },
+            proxyRes: (proxyRes, req, res) => {
+                proxyRes.headers['Access-Control-Allow-Origin'] = '*';
+                proxyRes.headers['Access-Control-Allow-Headers'] = 'Origin, X-Requested-With, Content-Type, Accept, Authorization';
+            },
+            error: (err, req, res) => {
+                console.error('Proxy error:', err);
+                res.status(500).send('Proxy error');
+            },
+        },
+    }));
+    
+    return app;
+}