diff --git a/.docker/Dockerfile b/.docker/Dockerfile
index 35dc6ecca496eece4f69599373f26a98d5e8ed62..6e130ee8e5b0adb4851f528843b15f727dfe2833 100644
--- a/.docker/Dockerfile
+++ b/.docker/Dockerfile
@@ -4,6 +4,9 @@ RUN echo "deb http://deb.debian.org/debian buster-backports main" > /etc/apt/sou
 RUN apt-get update
 RUN apt-get install -y clang-format-11
 RUN apt-get install -y golang-1.15
+
+RUN /usr/lib/go-1.5/bin/go install github.com/pseudomuto/protoc-gen-doc/cmd/protoc-gen-doc@v1.4.1
+
 RUN apt-get install -y curl
 RUN apt-get install -y cmake
 RUN apt-get install -y python3-pip
@@ -23,4 +26,3 @@ RUN BIN="/usr/local/bin" && \
 COPY doc/requirements.txt requirements.txt
 RUN pip3 install -r requirements.txt
 
-RUN PATH=$PATH:/usr/lib/go-1.5/bin go install github.com/pseudomuto/protoc-gen-doc/cmd/protoc-gen-doc@v1.4.1