diff --git a/Dockerfile b/Dockerfile
index cd8b9a0..a27d355 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -3,6 +3,14 @@ FROM zenika/terraform-azure-cli:latest AS build
 RUN apt-get update && apt-get install make git python3-pip -y
 RUN pip3 install gitpython python-terraform pyhcl
 
+RUN wget https://golang.org/dl/go1.15.4.linux-amd64.tar.gz && \
+    tar -C /usr/local -xzf go1.15.4.linux-amd64.tar.gz && \
+    export PATH=$PATH:/usr/local/go/bin
+
+RUN git clone --depth=1 -b master https://github.com/cloudposse/tfmask.git && \
+    cd tfmask && \
+    go build
+    
 FROM build as final
 WORKDIR /workspace
 CMD [ "bash" ]