Improve dockerfile

Dockerfile

@@ -28,7 +28,7 @@ WORKDIR /app/aep-schedule-website
 # Build the app
 RUN cargo leptos build --release -vv
 
-FROM alpine as runner
+FROM alpine AS runner
 # Copy the server binary to the /app directory
 COPY --from=builder /app/aep-schedule-website/target/release/aep-schedule-website /app/
 # /target/site contains our JS/WASM/CSS, etc.