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https://github.com/diogok/termux-qemu-alpine-docker

Run Docker on Alpine, on Qemu, on Termux, on Android.
https://github.com/diogok/termux-qemu-alpine-docker

alpine android docker qemu termux

Last synced: 24 days ago
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Run Docker on Alpine, on Qemu, on Termux, on Android.

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README 

        
# Termux + Qemu + Alpine + Docker + VNC



This is a setup for runing docker on android, by the means of Termux, running alpine in qemu and them enabling docker on the Alpine.



This was only tested on Samsung S10e.



## [Install Termux](https://termux.com)



And start it.



## Setup VNC + Fluxbox



First step was to setup VNC and Fluxbox, which is quite easy following [termux VNC guide](https://wiki.termux.com/wiki/Graphic_Environment):



Enable x11 repository, install tiger-vnc and fluxbox:



```

pkg install x11-repo

pkg install tigervnc fluxbox

```



Them start vncserver, it will ask you to setup password and other options, just follow on screen instructions:



```

vncserver

```



Xvnc will them be running in background. We can now start fluxbox:



```

DISPLAY=":1" fluxbox

```



This will start fluxbox on the Xvnc server and lock the current terminal. You can also append an "&" on that command to start it in background.



You can stop fluxbox on the remote desktop.



You can stop vnc:



```

vncserver -kill :1

```



To access your VNC server, choose your RDP client (like Vinagre on Ubuntu, or VNC Viewer on Android) and connect to your phone IP on port 5901 (for display :1).



To discover your phone IP on the wifi:



```

ip addr show wlan0

```



Inside Fluxbox you can right-click on the desktop to get a menu and launch stuff like "aterm".



## Setup QEMU



Qemu setup is quite easy, just small gotcha is that I had to use qemu from x11-repo instead of unstable headless, and do not really know why.



Installing Qemu:



```

pkg install unstable-repo

pkg install qemu-system-x64_64 qemu-utils

```



That is it.



## Preparing to install Alpine on Qemu



You will need the Alpine *virtual* ISO, that you can download from [alpine website](https://alpinelinux.org). Save it as alpine.iso to easy the typing:



```

pkg install curl

curl http://dl-cdn.alpinelinux.org/alpine/v3.10/releases/x86_64/alpine-virt-3.10.1-x86_64.iso -o alpine.iso

```



Them you will need an image disk for the alpine installation to reside in:



```

qemu-img create -f qcow2 alpine.img 5g

```



## Starting Alpine installation on QEMU



Them you can launch Qemu installation of Alpine. I fyou are on an XVNC session, it will launch a QEMU window.



```

qemu-system-x86_64 -hda alpine.img -cdrom alpine.iso -boot d -m 512

```



If you want to keep on the same terminal (not launching a new window) you can append "-nographic" to that last command.



If you are on a QEMU window you can click it to grab focus, and can CTRL+ALT+G to release focus. You can also CTRL+ALT+F to go fullscreen.



On a terminal, you can stop emulation with CTRL+A+X. There are several others Ctrl+A commands.



It will take a while for alpine to boot, but will them present you with a "Login:" terminal, just enter "root" to start. 



## Setting up networking on Alpine on Qemu



This is a part that I had trouble, before starting setup inside alpine, you should setup proper network.



First, setup the interfaces, by editing */etc/network/interfaces* to have the following content:



```

auto lo

iface lo inet loopback

auto eth0

iface eth0 inet dhcp

```



Save it, and restart the alpine network:



```

/etc/init.d/networking restart

```



You should get an IP from the Qemu user network. Please be aware that _ping_ does not work on this setup.



Them, and only them, you also need to add DNS servers, by editing */etc/resolv.conf* to the following:



```

nameserver 8.8.8.8

```



You can test by trying to setup just the repositories:



```

setup-apkrepos

```



If this gives you a list of repos to choose from (About 40+), them it worked.



## Installing Alpine



To start installation:



```

setup-alpine

```



Just follow on screen instructions with attention. Be sure to choose to install on disk "sda" when prompted.



Once the installation is complete, shutdown Alpine by issuing halt"



```

halt

```



When it says system halted, exit Qemu (either by CTRL+Alt+g and closing window, or by ctrl+a+x on the terminal).



## Running installed Alpine on Qemu



To start alpine, simply run:



```

qemu-system-x86_64 -hda alpine.img -boot c -m 512

```



It will be take a while and give you a login prompt for the root user you setup.



## Installing Docker on Alpine



The reason I installed it all is to [run docker on alpine](https://wiki.alpinelinux.org/wiki/Docker).



On alpine, edit /etc/pkg/repositories and uncomment comunity repository, them install docker:



```

apk update

apk add docker

```



Start the service and enable it on boot:



```

service start docker

update-rc enable docker

```



Test it out



```

docker info

docker run alpine echo hello

```



## How slow is it?



On my machine a simple hello world take 1s to echo, while on this setup it takes 25s. Well, at least it works...