Go lang docker with vscode support

DockerGolang

FROM golang:1.15

# Configure to reduce warnings and limitations as instruction from official VSCode Remote-Containers.
# See https://code.visualstudio.com/docs/remote/containers-advanced#_reducing-dockerfile-build-warnings.
ENV DEBIAN_FRONTEND=noninteractive
RUN apt-get update \
    && apt-get -y install --no-install-recommends apt-utils 2>&1

# Verify git, process tools, lsb-release (common in install instructions for CLIs) installed.
RUN apt-get -y install git gitk iproute2 procps lsb-release
RUN apt-get update

# Install gocode-gomod.
RUN go get -x -d github.com/stamblerre/gocode 2>&1 \
    && go build -o gocode-gomod github.com/stamblerre/gocode \
    && mv gocode-gomod $GOPATH/bin/
    
# Install other tools.
RUN go get -u -v github.com/mdempsky/gocode
RUN go get -u -v github.com/uudashr/gopkgs/cmd/gopkgs
RUN go get -u -v github.com/ramya-rao-a/go-outline
RUN go get -u -v github.com/acroca/go-symbols
RUN go get -u -v golang.org/x/tools/cmd/guru
RUN go get -u -v golang.org/x/tools/cmd/gorename
RUN go get -u -v github.com/go-delve/delve/cmd/dlv
RUN go get -u -v github.com/stamblerre/gocode
RUN go get -u -v github.com/rogpeppe/godef
RUN go get -u -v golang.org/x/tools/cmd/goimports
RUN go get -u -v golang.org/x/tools/gopls
RUN go get -u -v golang.org/x/lint/golint 

# Clean up.
RUN apt-get autoremove -y \
    && apt-get clean -y \
    && rm -rf /var/lib/apt/lists/*

# Revert workaround at top layer.
ENV DEBIAN_FRONTEND=dialog

# Expose service ports.
EXPOSE 8000