diff --git a/.github/Dockerfile b/.github/Dockerfile
index 5c3be6db..96f73216 100644
--- a/.github/Dockerfile
+++ b/.github/Dockerfile
@@ -7,7 +7,14 @@ RUN apk add git gcc musl-dev
 COPY . /app/tuic
 
 WORKDIR /app/tuic
-ARG RUSTFLAGS="-Ctarget-feature=+sse2,+sse3,+avx"
+
+RUN if [ "$DOCKER_PLATFORM" = "amd64" ]; then \
+      echo "Setting RUSTFLAGS for x86_64" && \
+      export RUSTFLAGS="-Ctarget-feature=+sse2,+sse3,+avx" ; \
+    else \
+      export RUSTFLAGS="" ; \
+    fi
+
 RUN cargo build --release --config net.git-fetch-with-cli=true --package tuic-server
 RUN cp ./target/release/tuic-server /usr/bin/tuic-server
 RUN chmod +x /usr/bin/tuic-server
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 1a717fe4..64aee8aa 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -293,7 +293,7 @@ jobs:
         with:
           context: .
           file: .github/Dockerfile
-          platforms: linux/amd64,linux/arm64
+          platforms: linux/amd64,linux/arm64,linux/i386
           push: true
           tags: ghcr.io/${{ steps.get-ownername.outputs.OWNER }}/tuic-server:${{ steps.get-ver.outputs.TAG }}