diff --git a/__tests__/Dockerfile b/__tests__/Dockerfile
index d9fb6b7..67d08d7 100644
--- a/__tests__/Dockerfile
+++ b/__tests__/Dockerfile
@@ -1,11 +1,26 @@
 FROM node:12-slim
 
+SHELL ["/bin/bash", "-l", "-c"]
+
+RUN apt-get update && \
+    apt-get install -y --no-install-recommends \
+    build-essential \
+    libcurl4-gnutls-dev libexpat1-dev gettext libz-dev libssl-dev autoconf \
+    ca-certificates \
+    wget && \
+    rm -rf /var/lib/apt/lists/*
+
+WORKDIR /git
+ENV GIT_VERSION="2.25.0"
+RUN wget -q "https://github.com/git/git/archive/v${GIT_VERSION}.tar.gz" && \
+    tar -zxf "./v${GIT_VERSION}.tar.gz" && \
+    rm "./v${GIT_VERSION}.tar.gz" && \
+    cd "./git-${GIT_VERSION}" && \
+    make configure && \
+    ./configure --prefix=/usr && \
+    make all && \
+    make install
+
 WORKDIR /repo
 
-RUN apt-get update && \
-    apt-get -y install --no-install-recommends \
-    git \
-    bash && \
-    rm -rf /var/lib/apt/lists/*
-
 CMD [ "bash" ]