fix: resolve Hugging Face deployment and environment variable issues

.dockerignore

@@ -2,7 +2,6 @@ node_modules
 dist
 .git
 .gitignore
-.env
 README.md
 Dockerfile
 .dockerignore

Dockerfile

@@ -1,23 +1,44 @@
 # Build stage
 FROM node:20-alpine AS build
 WORKDIR /app
+
+# Install dependencies
 COPY package*.json ./
 RUN npm install
+
+# Copy source and build
 COPY . .
-# These will be provided by Hugging Face Secrets during build
-# Vite automatically picks up VITE_ prefixed variables from the environment
+
+# Build-time arguments for Vite environment variables
+ARG VITE_SUPABASE_URL
+ARG VITE_SUPABASE_PUBLISHABLE_KEY
+
+# Set them as environment variables so Vite picks them up during 'npm run build'
+# if they are not already in a .env file copied in the step above
+ENV VITE_SUPABASE_URL=$VITE_SUPABASE_URL
+ENV VITE_SUPABASE_PUBLISHABLE_KEY=$VITE_SUPABASE_PUBLISHABLE_KEY
+
 RUN npm run build
 
 # Production stage
 FROM nginx:stable-alpine
 COPY --from=build /app/dist /usr/share/nginx/html
-RUN echo 'server { \
-    listen 7860; \
-    location / { \
-        root /usr/share/nginx/html; \
-        index index.html; \
-        try_files $uri $uri/ /index.html; \
-    } \
-}' > /etc/nginx/conf.d/default.conf
+
+# Clean default configuration and create a new one for Hugging Face (port 7860)
+RUN rm /etc/nginx/conf.d/default.conf && \
+    printf 'server {\n\
+    listen 7860;\n\
+    server_name localhost;\n\
+    location / {\n\
+        root /usr/share/nginx/html;\n\
+        index index.html;\n\
+        try_files $uri $uri/ /index.html;\n\
+    }\n\
+    error_page 500 502 503 504 /50x.html;\n\
+    location = /50x.html {\n\
+        root /usr/share/nginx/html;\n\
+    }\n\
+}\n' > /etc/nginx/conf.d/default.conf
+
 EXPOSE 7860
 CMD ["nginx", "-g", "daemon off;"]

src/integrations/supabase/client.ts

@@ -5,6 +5,13 @@ import type { Database } from './types';
 const SUPABASE_URL = import.meta.env.VITE_SUPABASE_URL;
 const SUPABASE_PUBLISHABLE_KEY = import.meta.env.VITE_SUPABASE_PUBLISHABLE_KEY;
 
+if (!SUPABASE_URL || !SUPABASE_PUBLISHABLE_KEY) {
+  console.error(
+    "Missing Supabase environment variables! " +
+    "Ensure VITE_SUPABASE_URL and VITE_SUPABASE_PUBLISHABLE_KEY are set."
+  );
+}
+
 // Import the supabase client like this:
 // import { supabase } from "@/integrations/supabase/client";