Test for go

tests/ci/image/Dockerfile

@@ -1,18 +1,22 @@
 FROM ubuntu:18.04
 
 ENV DEBIAN_FRONTEND=noninteractive
+ENV LC_ALL C.UTF-8
 
 RUN apt-get update && \
   apt-get -y dist-upgrade && \
   apt-get -y install python3-dev \
                      python3-pip \
                      ca-cacert \
+                     locales \
+                     language-pack-en \
                      libncurses5-dev libncursesw5-dev \
                      git \
                      tcl-dev \
                      tcllib \
                      gdb \
-                     lldb && \
+                     lldb \
+                     curl && \
   apt-get -y autoremove
 
 RUN ln -fs /usr/share/zoneinfo/Europe/London /etc/localtime && \
@@ -36,3 +40,17 @@ RUN mkdir -p $HOME/vim && \
     git checkout ${VIM_VERSION} && \
     make -j 4 install
 
+# linuxbrew (homebrew)
+RUN mkdir -p /home/linuxbrew/.linuxbrew &&\
+    chmod -R go+rwx /home/linuxbrew && \
+    mkdir -p /home/linuxbrew/.linuxbrew/bin && \
+    git clone  https://github.com/Homebrew/brew /home/linuxbrew/.linuxbrew/Homebrew && \
+    ln -s /home/linuxbrew/.linuxbrew/Homebrew/bin/brew /home/linuxbrew/.linuxbrew/bin && \
+    echo "eval \$(/home/linuxbrew/.linuxbrew/bin/brew shellenv)" \
+        > /etc/bash.bashrc
+
+RUN /home/linuxbrew/.linuxbrew/bin/brew install golang
+
+# clean up
+RUN /home/linuxbrew/.linuxbrew/bin/brew cleanup && \
+    rm -rf ~/.cache