emacs in docker

Dockerfile

FROM ubuntu:16.04

MAINTAINER Manuel Kreutz <manuel@140.am>

RUN apt-get update && \
    apt-get install -y curl git software-properties-common build-essential && \
    apt-get clean

# install emacs 26 from ppa
RUN add-apt-repository ppa:kelleyk/emacs && \
    apt-get update && \
    apt-get install -y emacs26-nox && \
    apt-get clean

RUN curl -OL http://golang.org/dl/go1.12.7.linux-amd64.tar.gz && \
    tar -C /usr/local -xzf go1.12.7.linux-amd64.tar.gz && \
    rm go1.12.7.linux-amd64.tar.gz

ENV PATH $PATH:/usr/local/go/bin:/workspace/bin

RUN mkdir -p /workspace/bin /workspace/pkg /workspace/src

ENV GOPATH /workspace
ENV GOROOT /usr/local/go

# install go packages
RUN go get -u golang.org/x/tools/cmd/goimports && \
    go get -u golang.org/x/lint/golint && \
    go get -u github.com/nsf/gocode && \
    go get -u github.com/rogpeppe/godef && \
    go get -u github.com/smartystreets/goconvey

# container user
RUN groupadd -f -g 100 dummy && \
    useradd -s /bin/bash -u 1000 -g users dummy && \
    mkdir -p /home/dummy && \
    chown -R dummy:dummy /home/dummy /workspace

# clone emacs configuration
RUN git clone --recursive https://github.com/140am/.emacs.d /home/dummy/.emacs.d && \
    cd /home/dummy/.emacs.d && \
    chown -R dummy:dummy /home/dummy

RUN sed -i 's/(concat (getenv "GOPATH")  "\/src\/github.com\/golang\/lint\/misc\/emacs")/"\/workspace\/src\/golang.org\/x\/lint\/misc\/emacs"/g' /home/dummy/.emacs.d/settings/editing-go.el

USER dummy

ENV TERM=xterm-256color