add vi to build-tools (#3304)

Signed-off-by: Ian Rudie <[email protected]>

Author: ilrudie

docker/build-tools/Dockerfile

@@ -115,7 +115,8 @@ RUN --mount=type=cache,target=/var/lib/apt/lists,sharing=locked \
     gnupg2 \
     software-properties-common \
     unzip \
-    xz-utils
+    xz-utils \
+    vim-tiny
 
 # Install protoc
 RUN set -eux; \