Update Dockerfile

Dockerfile

@@ -5,12 +5,15 @@ RUN openssl rand -base64 32 > /nextauth_secret.txt
 
 # Set required environment variables
 ENV DATABASE_URL=postgresql://postgres:postgres@localhost:5432/langfuse
-ENV NEXTAUTH_SECRET=$(cat /nextauth_secret.txt)
+ENV NEXTAUTH_SECRET=secret_from_file
 ENV POSTGRES_PASSWORD=postgres
 ENV POSTGRES_DB=langfuse
 
+# Read the secret into the environment variable
+RUN export NEXTAUTH_SECRET=$(cat /nextauth_secret.txt)
+
 # Expose the port Langfuse runs on
 EXPOSE 3000
 
 # Start Langfuse
-CMD ["sh", "-c", "langfuse"]
+CMD ["langfuse"]