Enable remote launcher catalog source

admin/server.js

@@ -14,6 +14,7 @@ const LAUNCHER_CATALOG_PATH = path.join(PROJECT_ROOT, 'app', 'assets', 'launcher
 const PUBLIC_DIR = path.join(__dirname, 'public')
 const SAMPLE_DISTRIBUTION_PATH = path.join(PROJECT_ROOT, 'docs', 'sample_distribution.json')
 const EXAMPLE_DISTRIBUTION_PREFIX = 'https://example.com/launcher/'
+const PUBLIC_BASE_URL = normalizeText(process.env.LAUNCHER_PUBLIC_BASE_URL).replace(/\/+$/, '')
 
 function normalizeText(value){
     return typeof value === 'string' ? value.trim() : ''
@@ -45,6 +46,13 @@ function normalizeBoolean(value){
     return value === true
 }
 
+function getPublicBaseUrl(){
+    if(PUBLIC_BASE_URL.length > 0){
+        return PUBLIC_BASE_URL
+    }
+    return `http://${HOST}:${PORT}`
+}
+
 function resolveSafeProjectPath(relativePath){
     const resolvedPath = path.resolve(PROJECT_ROOT, relativePath)
     if(!resolvedPath.startsWith(PROJECT_ROOT + path.sep) && resolvedPath !== PROJECT_ROOT){
@@ -259,6 +267,7 @@ async function start(){
 
     app.use(express.json({ limit: '5mb' }))
     app.use('/uploads', express.static(UPLOADS_DIR))
+    app.use('/admin/data/uploads', express.static(UPLOADS_DIR))
     app.use('/admin/data/distributions', express.static(DISTRIBUTIONS_DIR))
 
     app.get('/api/meta', async (_req, res) => {
@@ -267,7 +276,7 @@ async function start(){
             port: PORT,
             runtimeCatalogPath: toProjectRelativePath(RUNTIME_CATALOG_PATH),
             launcherCatalogPath: toProjectRelativePath(LAUNCHER_CATALOG_PATH),
-            localCatalogUrl: `http://${HOST}:${PORT}/catalog.json`,
+            localCatalogUrl: `${getPublicBaseUrl()}/catalog.json`,
             distributionsPath: toProjectRelativePath(DISTRIBUTIONS_DIR)
         })
     })
@@ -362,7 +371,7 @@ async function start(){
                     storedName: req.file.filename,
                     size: req.file.size,
                     path: relativePath,
-                    localUrl: `http://${HOST}:${PORT}/uploads/${encodeURIComponent(req.file.filename)}`
+                    localUrl: `${getPublicBaseUrl()}/uploads/${encodeURIComponent(req.file.filename)}`
                 }
             })
         } catch (error) {
@@ -394,7 +403,7 @@ async function start(){
                 ok: true,
                 file: {
                     path: relativePath,
-                    localUrl: `http://${HOST}:${PORT}/${relativePath}`
+                    localUrl: `${getPublicBaseUrl()}/${relativePath}`
                 }
             })
         } catch (error) {