diff --git a/Dockerfile b/Dockerfile
index 9c76a8f..12604db 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM ubuntu:20.04
+FROM ubuntu:20.04 AS builder
 
 RUN apt-get update && \
     apt-get install -y build-essential curl gcc jq make && \
@@ -8,7 +8,16 @@ RUN apt-get update && \
 
 RUN curl -LO https://github.com/polyml/polyml/archive/v5.8.tar.gz && \
     tar xf v5.8.tar.gz && \
-    cd polyml-5.8 && ./configure --prefix=/usr && make && make install
+    cd polyml-5.8 && ./configure --prefix=/tmp && make && make install
+FROM ubuntu:20.04
+
+RUN apt-get update && \
+    apt-get install -y jq && \
+    apt-get purge --auto-remove && \
+    apt-get clean && \
+    rm -rf /var/lib/apt/lists/*
+
+COPY --from=builder /tmp/ /usr/
 
 COPY . /opt/test-runner
 WORKDIR /opt/test-runner