[SEBA-853] Building BBR and BBSim as part of the scale test pipeline

Change-Id: I007fc7d0d18f039ccf6e3ba059641497404b3d88
diff --git a/build/ci/Dockerfile.builder b/build/ci/Dockerfile.builder
new file mode 100644
index 0000000..0acc2b3
--- /dev/null
+++ b/build/ci/Dockerfile.builder
@@ -0,0 +1,32 @@
+# Copyright 2018-present Open Networking Foundation
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# this container is used to provide a build environment so that we don't need
+# the prereqs installed on a CI machine
+
+FROM golang:1.12-stretch
+
+# install prereqs
+ENV PROTOC_VERSION 3.6.1
+ENV PROTOC_SHA256SUM 6003de742ea3fcf703cfec1cd4a3380fd143081a2eb0e559065563496af27807
+
+RUN apt-get update \
+ && apt-get install -y unzip libpcap-dev \
+ && curl -L -o /tmp/protoc-${PROTOC_VERSION}-linux-x86_64.zip https://github.com/google/protobuf/releases/download/v${PROTOC_VERSION}/protoc-${PROTOC_VERSION}-linux-x86_64.zip \
+ && echo "$PROTOC_SHA256SUM  /tmp/protoc-${PROTOC_VERSION}-linux-x86_64.zip" | sha256sum -c - \
+ && unzip /tmp/protoc-${PROTOC_VERSION}-linux-x86_64.zip -d /tmp/protoc3 \
+ && mv /tmp/protoc3/bin/* /usr/local/bin/ \
+ && mv /tmp/protoc3/include/* /usr/local/include/ \
+ && go get -v github.com/grpc-ecosystem/grpc-gateway/protoc-gen-grpc-gateway \
+ && go get -v github.com/golang/protobuf/protoc-gen-go
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