diff --git a/Dockerfile b/Dockerfile
index f073b02..23ef05a 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -3,8 +3,13 @@ WORKDIR /
 
 RUN apk add musl-dev
 
+RUN USER=root cargo new --bin cup
 WORKDIR /cup
+
 COPY Cargo.toml Cargo.lock ./
+RUN cargo build --release
+RUN rm src/*.rs
+
 COPY src ./src
 RUN cargo build --release