$ make docker-build
>> show env
   GOOS              = darwin
   GOARCH            = amd64
   GO111MODULE       = on
   CGO_ENABLED       = 0
   CGO_CFLAGS        =
   CGO_LDFLAGS       =
   BUILD_TAGS        = kagome
   VERSION           = latest
   BIN_EXT           =
   DOCKER_REPOSITORY = mosuka
   LDFLAGS           = -ldflags -X "github.com/mosuka/blast/version.Version=latest"
   PACKAGES          = github.com/mosuka/blast github.com/mosuka/blast/builtin github.com/mosuka/blast/client github.com/mosuka/blast/cmd github.com/mosuka/blast/errors github.com/mosuka/blast/log github.com/mosuka/blast/mapping github.com/mosuka/blast/marshaler github.com/mosuka/blast/metric github.com/mosuka/blast/protobuf github.com/mosuka/blast/registry github.com/mosuka/blast/server github.com/mosuka/blast/storage github.com/mosuka/blast/util github.com/mosuka/blast/version
   PROTOBUFS         = ./protobuf

...

update-alternatives: error: alternative path /usr/bin/gcc-6 doesn't exist
The command '/bin/sh -c echo "deb http://ftp.us.debian.org/debian/ jessie main contrib non-free" >> /etc/apt/sources.list &&     echo "deb-src http://ftp.us.debian.org/debian/ jessie main contrib non-free" >> /etc/apt/sources.list &&     apt-get update &&     apt-get upgrade -y &&     apt-get install -y             git             golang             libicu-dev             libstemmer-dev             gcc-4.8             g++-4.8             build-essential &&     apt-get clean &&     update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-6 80 &&     update-alternatives --install /usr/bin/g++ g++ /usr/bin/g++-6 80 &&     update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-4.8 90 &&     update-alternatives --install /usr/bin/g++ g++ /usr/bin/g++-4.8 90 &&     go get -u -v github.com/blevesearch/cld2 &&     cd ${GOPATH}/src/github.com/blevesearch/cld2 &&     git clone https://github.com/CLD2Owners/cld2.git &&     cd cld2/internal &&     ./compile_libs.sh &&     cp *.so /usr/local/lib &&     cd ${GOPATH}/src/github.com/mosuka/blast &&     make GOOS=linux          GOARCH=amd64          CGO_ENABLED=1          BUILD_TAGS="kagome icu libstemmer cld2"          VERSION="${VERSION}"          build' returned a non-zero code: 2
make: *** [docker-build] Error 2

diff --git Dockerfile Dockerfile
index ee718e5..08f4a1d 100644
--- Dockerfile
+++ Dockerfile
@@ -12,15 +12,15 @@ RUN echo "deb http://ftp.us.debian.org/debian/ jessie main contrib non-free" >>
     apt-get upgrade -y && \
     apt-get install -y \
             git \
-            golang \
+           # golang \
             libicu-dev \
             libstemmer-dev \
             gcc-4.8 \
             g++-4.8 \
             build-essential && \
     apt-get clean && \
-    update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-6 80 && \
-    update-alternatives --install /usr/bin/g++ g++ /usr/bin/g++-6 80 && \
+    #update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-6 80 && \
+    #update-alternatives --install /usr/bin/g++ g++ /usr/bin/g++-6 80 && \
     update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-4.8 90 && \
     update-alternatives --install /usr/bin/g++ g++ /usr/bin/g++-4.8 90 && \
     go get -u -v github.com/blevesearch/cld2 && \