diff --git a/Dockerfile b/Dockerfile
index 65215fc..8de053a 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -14,9 +14,10 @@ WORKDIR /app
 # Copy workspace configuration
 COPY pnpm-workspace.yaml package.json pnpm-lock.yaml ./
 
-# Copy .env to .env.production for proper svelte compiling
-RUN mkdir -p ./packages/frontend
-COPY packages/frontend/.env ./packages/frontend/.env.production
+# Create env file with placeholder values so SvelteKit knows variable names at build time
+# Actual values are injected at runtime via process.env (adapter-node)
+RUN mkdir -p ./packages/frontend && \
+    printf 'PUBLIC_API_URL=\nPUBLIC_URL=\nPUBLIC_UMAMI_ID=\nPUBLIC_UMAMI_SCRIPT=\n' > ./packages/frontend/.env
 
 # ============================================================================
 # Builder stage - compile application with Rust/WASM support