Add Dockerfile and instructions;

Dockerfile

@@ -0,0 +1,18 @@
+FROM node:4
+
+RUN apt update && \
+    apt dist-upgrade -y;
+
+RUN apt install -y git;
+
+RUN mkdir -p /opt/gitlab-to-irc
+
+WORKDIR /opt
+RUN git clone https://framagit.org/bnjbvr/gitlab-to-irc
+
+WORKDIR /opt/gitlab-to-irc
+COPY ./config.js /opt/gitlab-to-irc/config.js
+
+RUN npm install
+
+CMD node ./index.js

README.md

@@ -11,6 +11,14 @@ how-to
 - run `node ./index.js` from anywhere.
 - fun and profit.
 
+how-to (Docker)
+===
+
+- Rename `config.example.js` to `config.js` and change the values there.
+- Modify the port mapping in `docker-run.sh`.
+- `./run-docker.sh`
+- fun and profit.
+
 but this doesn't implement what i want
 ===
 

run-docker.sh

@@ -0,0 +1,8 @@
+#!/bin/bash
+
+docker build -t bnjbvr/gitlab-to-irc .
+
+docker run --name gitlab-to-irc \
+    -p 1337:1337 \
+    -d -ti bnjbvr/gitlab-to-irc
+