diff --git a/.gitea/workflows/build-shadowsocks-rust.yaml b/.gitea/workflows/build-shadowsocks-rust.yaml
index 9925a26..ca83a06 100644
--- a/.gitea/workflows/build-shadowsocks-rust.yaml
+++ b/.gitea/workflows/build-shadowsocks-rust.yaml
@@ -25,6 +25,7 @@ jobs:
           platforms: |
             linux/amd64
             linux/arm64
+            linux/arm/v7
           push: true
           pull: false
           ssh: default=/home/luser/.ssh/id_ed25519
diff --git a/shadowsocks-rust/Dockerfile b/shadowsocks-rust/Dockerfile
index 800340b..19710be 100644
--- a/shadowsocks-rust/Dockerfile
+++ b/shadowsocks-rust/Dockerfile
@@ -9,22 +9,28 @@ ADD --chown=luser:luser git@github.com:shadowsocks/shadowsocks-rust.git#v${VERSI
 FROM base AS builder-linux_386
 ENV RUST_TARGET="i686-unknown-linux-musl"
 
-FROM base AS builder-linux_amd64
+FROM gitea.woggioni.net/woggioni/arch-builder:rust-full AS builder-linux_amd64
+WORKDIR /home/luser/shadowsocks-rust
+ADD --chown=luser:luser git@github.com:shadowsocks/shadowsocks-rust.git#v${VERSION} .
 ENV RUST_TARGET="x86_64-unknown-linux-musl"
 ENV CC_x86_64-unknown-linux-musl=/opt/x-tools/x86_64-unknown-linux-musl/bin/x86_64-unknown-linux-musl-gcc
 ENV CXX_x86_64-unknown-linux-musl=/opt/x-tools/x86_64-unknown-linux-musl/bin/x86_64-unknown-linux-musl-g++
 
-FROM base AS builder-linux_arm64
+FROM gitea.woggioni.net/woggioni/arch-builder:rust-full AS builder-linux_arm64
+WORKDIR /home/luser/shadowsocks-rust
+ADD --chown=luser:luser git@github.com:shadowsocks/shadowsocks-rust.git#v${VERSION} .
 ENV RUST_TARGET="aarch64-unknown-linux-musl"
 ENV CC_aarch64_unknown_linux_musl=/opt/x-tools/aarch64-unknown-linux-musl/bin/aarch64-unknown-linux-musl-gcc
 ENV CXX_aarch64_unknown_linux_musl=/opt/x-tools/aarch64-unknown-linux-musl/bin/aarch64-unknown-linux-musl-g++
 
-FROM base AS builder-linux_arm_v7
+FROM gitea.woggioni.net/woggioni/arch-builder:rust-full AS builder-linux_arm_v7
+WORKDIR /home/luser/shadowsocks-rust
+ADD --chown=luser:luser git@github.com:shadowsocks/shadowsocks-rust.git#v${VERSION} .
 ENV RUST_TARGET="arm-unknown-linux-musleabihf"
 ENV CC_armv7_unknown_linux_musleabihf=/opt/x-tools/arm-unknown-linux-musleabi/bin/arm-unknown-linux-musleabi-gcc
 ENV CXX_armv7_unknown_linux_musleabihf=/opt/x-tools/arm-unknown-linux-musleabi/bin/arm-unknown-linux-musleabi-g++
 
-FROM builder-${TARGETPLATFORM/\//_} AS builder
+FROM builder-${TARGETPLATFORM//\//_} AS builder
 RUN rustup target add $RUST_TARGET
 RUN cargo +stable build --locked --target "$RUST_TARGET" --release --features "full,aead-cipher-extra,aead-cipher-2022-extra,security-replay-attack-detect" \
     && mv target/$RUST_TARGET/release/ss* target/release/