Modifying test dockerfile to use apt instead of apk
FROM golang:1 as build
ENV PACKAGEPATH=github.com/ligato/networkservicemesh/
-RUN apk add --update protobuf git bash
+
+RUN apt update
+RUN apt install -y git bash unzip
+RUN wget https://github.com/google/protobuf/releases/download/v3.5.1/protoc-3.5.1-linux-x86_64.zip
+RUN unzip -d /usr/local protoc-3.5.1-linux-x86_64
COPY [".","/go/src/${PACKAGEPATH}"]
WORKDIR /go/src/${PACKAGEPATH}/
RUN ./scripts/build.sh
