chg: [doc] move the Docker junk

doc/X-docker.md

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+Docker Quick Start (Ubuntu 16.04 LTS)
+------------
+
+:warning:
+Not maintained at the moment.
+If you are interested to get this running, please:
+
+Fork -> Branch -> PR
+
+
+1. Install Docker
+```bash
+sudo su
+apt-get install -y curl
+curl https://get.docker.com | /bin/bash
+```
+
+2. Type these commands to build the Docker image:
+```bash
+git clone https://github.com/CIRCL/AIL-framework.git
+cd AIL-framework
+docker build -t ail-framework .
+```
+3. To start AIL on port 7000, type the following command below:
+```
+docker run -p 7000:7000 ail-framework
+```
+
+4. To debug the running container, type the following command and note the container name or identifier:
+```bash
+docker ps
+```
+
+After getting the name or identifier type the following commands:
+```bash
+docker exec -it CONTAINER_NAME_OR_IDENTIFIER bash
+cd /opt/ail
+```
+
+Install using Ansible
+---------------------
+
+Please check the [Ansible readme](ansible/README.md).
+