diff --git a/frontend/Dockerfile b/frontend/Dockerfile
index e9b1acb..802b149 100644
--- a/frontend/Dockerfile
+++ b/frontend/Dockerfile
@@ -17,6 +17,9 @@ COPY . .
 ARG HCAPTCHA_SITE_KEY
 ENV NEXT_PUBLIC_HCAPTCHA_SITE_KEY=${HCAPTCHA_SITE_KEY}
 
+# Create a .env file before build
+RUN echo "NEXT_PUBLIC_HCAPTCHA_SITE_KEY=$HCAPTCHA_SITE_KEY"
+
 # Build the Next.js app
 RUN npm run build