Install Docker on Termux

answerfile

KEYMAPOPTS="us us"
HOSTNAMEOPTS="-n alpine"
INTERFACESOPTS="auto lo
iface lo inet loopback

auto eth0
iface eth0 inet dhcp
    hostname alpine
"
TIMEZONEOPTS="-z UTC"
PROXYOPTS="none"
APKREPOSOPTS="http://dl-cdn.alpinelinux.org/alpine/v3.12/main http://dl-cdn.alpinelinux.org/alpine/v3.12/community"
SSHDOPTS="-c openssh"
NTPOPTS="-c busybox"
DISKOPTS="-v -m sys -s 0 /dev/sda"

docker-termux.md

Docker on Termux [in a VM]

Create a Linux VM and install Docker in it so you can (slowly) run x86 Docker containers on your Android device.

Recommended to use SSH or external keyboard to execute the following commands unless you want sore thumbs. See https://wiki.termux.com/wiki/Remote_Access#SSH

• Install QEMU

   pkg install qemu-utils qemu-common qemu-system-x86_64-headless
  

• Download Alpine Linux 3.12 (virt optimized) ISO

   mkdir alpine && cd $_
   wget http://dl-cdn.alpinelinux.org/alpine/v3.12/releases/x86_64/alpine-virt-3.12.3-x86_64.iso
  

• Create disk (note it won't actually take 4GB of space, more like 500MB)

   qemu-img create -f qcow2 alpine.img 4G
  

• Boot it up

  qemu-system-x86_64 -machine q35 -m 1024 -smp cpus=2 -cpu qemu64 \
    -drive if=pflash,format=raw,read-only,file=$PREFIX/share/qemu/edk2-x86_64-code.fd \
    -netdev user,id=n1,hostfwd=tcp::2222-:22 -device virtio-net,netdev=n1 \
    -cdrom alpine-virt-3.12.3-x86_64.iso \
    -nographic alpine.img
  

• Login with user root (no password)

• Setup network (press Enter to use defaults):

   localhost:~# setup-interfaces
   Available interfaces are: eth0.
   Enter '?' for help on bridges, bonding and vlans.
   Which one do you want to initialize? (or '?' or 'done') [eth0] 
   Ip address for eth0? (or 'dhcp', 'none', '?') [dhcp] 
   Do you want to do any manual network configuration? [no] 
   localhost:~# ifup eth0
  

• Create an answerfile to speed up installation:

  localhost:~# wget https://gist.githubusercontent.com/oofnikj/e79aef095cd08756f7f26ed244355d62/raw/answerfile
  

• Patch setup-disk to enable serial console output on boot

  localhost:~# sed -i -E 's/(local kernel_opts)=.*/\1="console=ttyS0"/' /sbin/setup-disk
  

• Run setup to install to disk

  localhost:~# setup-alpine -f answerfile
  

• Once installation is complete, power off the VM (command poweroff) and boot again without cdrom:

  qemu-system-x86_64 -machine q35 -m 1024 -smp cpus=2 -cpu qemu64 \
    -drive if=pflash,format=raw,read-only,file=$PREFIX/share/qemu/edk2-x86_64-code.fd \
    -netdev user,id=n1,hostfwd=tcp::2222-:22 -device virtio-net,netdev=n1 \
    -nographic alpine.img
  

• Install docker and enable on boot:

  alpine:~# apk update && apk add docker
  alpine:~# service docker start
  alpine:~# rc-update add docker
  

• Useful keys:

  • Ctrl+a x: quit emulation
  • Ctrl+a h: toggle QEMU console

I am trying to install with the aarch64 qemu but keeps getting
/dev/sda is not a block device suitable for partitioning.

All the step went fine but getting error at the Disk & Install step, looks like it is not able to find the disk.
which I created using:
qemu-img create -f qcow2 alpine.img 20G

I am using below command to boot:
qemu-system-aarch64 -machine virt -m 2048 -smp cpus=2 -cpu max
-drive if=pflash,format=raw,read-only,file=$PREFIX/share/qemu/edk2-aarch64-code.fd
-netdev user,id=n1,hostfwd=tcp::2222-:22 -device virtio-net,netdev=n1
-cdrom alpine-virt-3.19.1-aarch64.iso
-nographic alpine.img

@raj-sharma-git I have a question.

Is there a special reason you want to run arm 64? It is still not accelerated - far slower then x86_64 ( I read about 2x or 4x slower - not sure about this). Do you "need" it?

I consider finding out how that works - I still don't understand the reason.

I thought that the performance would be better because it operates on the same architecture as the phone's processor. My assumption was that it would opt for virtualization instead of emulation, leading to superior performance.

Guys do you know about proot-distro and ubuntu distro? It's much lighter and faster than qemu and supports docker not sure about alpine

Edit: forget that, it has errors with cgroups and I didn't know how to fix it

I thought that the performance would be better because it operates on the same architecture as the phone's processor. My assumption was that it would opt for virtualization instead of emulation, leading to superior performance.

If you "need" arm 64 docker and can give me a good reason why, I might consider adding this to my repo. I really see no point at the moment. You might have. That's why I am asking you.

Guys do you know about proot-distro and ubuntu distro? It's much lighter and faster than qemu and supports docker not sure about alpine

Not true: https://en.wikipedia.org/wiki/Alpine_Linux

Alpine Linux is a Linux distribution designed to be small, simple, and secure. It uses musl, BusyBox, and OpenRC instead of the more commonly used glibc, GNU Core Utilities, and systemd.This makes Alpine one of few Linux distributions not to be based on the GNU Core Utilities.

I updated to alpine 3.20

  Error: Could not retrieve NBP file size from HTTP server.

  Error: Server response timeout.
BdsDxe: failed to load Boot0004 "UEFI HTTPv4 (MAC:525400123456)" from PciRoot(0x0)/Pci(0x2,0x0)/MAC(525400123456,0x1)/IPv4(0.0.0.0,0x0,DHCP,0.0.0.0,0.0.0.0,0.0.0.0)/Uri(): Not Found

what this?

_PXE-E16：未收到有效报价。BdsDxe ：无法从 PciRoot(0x0)/Pci(0x2,0x0)/MAC(525400123456,0x1)/IPv4(0.0.0.0,0x0,DHCP,0.0.0.0,0.0.0.0,0.0.0.0.0 加载 Boot0003“UEFI PXEv4 (MAC:525400123456)”：未找到
Did you solve it?

  Error: Could not retrieve NBP file size from HTTP server.

  Error: Server response timeout.
BdsDxe: failed to load Boot0004 "UEFI HTTPv4 (MAC:525400123456)" from PciRoot(0x0)/Pci(0x2,0x0)/MAC(525400123456,0x1)/IPv4(0.0.0.0,0x0,DHCP,0.0.0.0,0.0.0.0,0.0.0.0)/Uri(): Not Found

what this?

I think the Alpine version that is refered in this post is a bit outdated. Try using 3.19 or 3.20

这是来自QQ邮箱的假期自动回复邮件。你好，我最近正在休假中，无法亲自回复你的邮件。我将在假期结束后，尽快给你回复。

why install X86 VMs when phone‘s cup are now arm . Wouldn't installing an arm system run more efficiently?

这是来自QQ邮箱的假期自动回复邮件。你好，我最近正在休假中，无法亲自回复你的邮件。我将在假期结束后，尽快给你回复。