install test tools

Dockerfiles/CI/Dockerfile

@@ -5,5 +5,16 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
         unzip \
     && rm -rf /var/lib/apt/lists/*
 
+ENV PROTOBUF_VER 3.8.0
+
+# NOTE: most of the following assume WORDKIR is '/'
 RUN set -ex \
-    && curl -sL https://taskfile.dev/install.sh | sh
\ No newline at end of file
+    # Task executor, will be installed in /bin
+    && curl -sL https://taskfile.dev/install.sh | sh \
+    # Go runtime dependencies
+    && go get github.com/golangci/govet \
+    && go get golang.org/x/lint/golint \
+    # Protobuf tooling
+    && go get github.com/golang/protobuf/protoc-gen-go \
+    && curl -LO https://github.com/google/protobuf/releases/download/v$PROTOBUF_VER/protoc-$PROTOBUF_VER-linux-x86_64.zip \
+    && mkdir protobuf && unzip protoc-$PROTOBUF_VER-linux-x86_64.zip && cp protobuf/bin/* /bin/ && rm -rf protobuf