diff --git a/Dockerfile b/Dockerfile
index 8134e20..8ec7d3c 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -2,17 +2,19 @@ FROM git.dzuchun.ing/actions/alpine AS builder
 
 ENV PATH="/root/.cargo/bin:/usr/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"
 
-# install Rust
-RUN curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs > rustup.sh; \
-    chmod +x rustup.sh; \
-    ./rustup.sh toolchain install stable -c cargo --profile minimal -y; \
-    ./rustup.sh toolchain install nightly -c cargo --profile minimal -y;
-
 # update package registry, install
 # - deps necessary(?) to build-std on musl
 # - upx
 RUN apk update; apk add --no-cache libunwind-static; apk add --no-cache xz-static; apk add --no-cache upx; apk cache clean
 
+# install Rust
+RUN apk add --no-cache curl; \
+    curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs > rustup.sh; \
+    chmod +x rustup.sh; \
+    ./rustup.sh toolchain install stable -c cargo --profile minimal -y; \
+    ./rustup.sh toolchain install nightly -c cargo --profile minimal -y; \
+    apk del curl;
+
 # separate step to remove layers
 FROM git.dzuchun.ing/actions/alpine