Update Dockerfile to use ssr feature

Author: Eason0729

frontend/Dockerfile

@@ -28,7 +28,7 @@ RUN rustup target add ${ARCH}-unknown-linux-musl
 ENV LEPTOS_OUTPUT_NAME="mdoj"
 ENV LEPTOS_BIN_TARGET_TRIPLE=${ARCH}-unknown-linux-musl
 
-RUN cargo leptos build -p frontend --bin-features compress,hydrate --release --precompress -vv
+RUN cargo leptos build -p frontend --bin-features compress,ssr --release --precompress -vv
 
 FROM scratch
 WORKDIR /config