diff --git a/Dockerfile b/Dockerfile
index 6a4710b09..29f8a2529 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -2,11 +2,13 @@ FROM ubuntu:latest
 
 RUN apt-get update && \
     apt-get upgrade -y && \
-    apt-get install -y gcc-mingw-w64-i686 make git
+    apt-get install -y gcc-mingw-w64-i686 make git python3-pip && \
+    python3 -m pip install pyjson5
 
 RUN mkdir /app
 WORKDIR /app
 ADD .git .git
+ADD cfg cfg
 ADD src src
 ADD test test
 ADD Makefile Makefile