# Installing Docker in Termux

This repository contains instructions on how to install Docker in [Termux](https://termux.com/), a powerful terminal emulator for Android.

# Prerequisites

Before proceeding with the installation, make sure you have the following prerequisites:

- An Android device with Termux installed. You can download Termux from the [F-Droid](https://f-droid.org/packages/com.termux/) app store.

- Stable internet connection.

# Installation Steps

Follow the steps below to install Docker in Termux:

1. Open Termux on your Android device.

2. Update and upgrade the packages by running the following command:

```bash

pkg update -y && pkg upgrade -y

```

3. Install the necessary dependencies by running the following command:

```bash

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

```

4. Create a seperate directory:

```bash

mkdir alpine && cd alpine

```

5. Download Alpine Linux 3.19 (virt optimized) ISO:

```bash

wget http://dl-cdn.alpinelinux.org/alpine/v3.19/releases/x86_64/alpine-virt-3.19.1-x86_64.iso

```

6. Create disk (note it won't actually take 5GB of space, more like 500-600MB):

```bash

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

```

7. Boot it up:

```bash

qemu-system-x86_64 -machine q35 -m 1024 -smp cpus=2 -cpu qemu64 -drive if=pflash,format=raw,read-only=on,file=$PREFIX/share/qemu/edk2-x86_64-code.fd -netdev user,id=n1,dns=8.8.8.8,hostfwd=tcp::2222-:22 -device virtio-net,netdev=n1 -cdrom alpine-virt-3.19.1-x86_64.iso -nographic alpine.img

```

8. Login with username ``root`` (no password)

9. Setup network (press Enter to use defaults):

```bash

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:~# 

```bash

ifup eth0

```

10. Create an answerfile to speed up installation:

```bash

wget https://raw.githubusercontent.com/cyberkernelofficial/docker-in-termux/main/answerfile

```

> **NOTE:** If you see any error like this: ``wget: bad address 'gist.githubusercontent.com'``. Then run this command

> ```bash

> echo -e "nameserver 192.168.1.1\nnameserver 1.1.1.1" > /etc/resolv.conf

> ```

11. Patch ``setup-disk`` to enable serial console output on boot:

```bash

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

```

12. Run setup to install to disk

```bash

setup-alpine -f answerfile

```

13. Once installation is complete, power off the VM (command ``poweroff``)

14. Boot again without cdrom:

```bash

qemu-system-x86_64 -machine q35 -m 1024 -smp cpus=2 -cpu qemu64 -drive if=pflash,format=raw,read-only=on,file=$PREFIX/share/qemu/edk2-x86_64-code.fd -netdev user,id=n1,dns=8.8.8.8,hostfwd=tcp::2222-:22 -device virtio-net,netdev=n1 -nographic alpine.img

```

A - 

`nano run_qemu.sh`

In the text editor, write the following:

```bash

#!/bin/bash

qemu-system-x86_64 -machine q35 -m 1024 -smp cpus=2 -cpu qemu64 -drive if=pflash,format=raw,read-only=on,file=$PREFIX/share/qemu/edk2-x86_64-code.fd -netdev user,id=n1,dns=8.8.8.8,hostfwd=tcp::2222-:22 -device virtio-net,netdev=n1 -nographic alpine.img

```

Save and close the file. In nano, you can do this by pressing Ctrl+X, then Y to confirm saving, and then Enter to confirm the filename.

B - chmod command: `chmod +x run_qemu.sh`

C - `./run_qemu.sh`

15. Update system and install docker:

```bash

echo "nameserver 8.8.8.8" > /etc/resolv.conf

echo "nameserver 8.8.4.4" >> /etc/resolv.conf

apk update && apk add docker

```

16. Start docker:

```bash

service docker start

```

17. Enable docker on boot:

```bash

rc-update add docker

```

18. Check docker install successfully or not:

```bash

docker run hello-world

```

# Some useful keys

- ``Ctrl+a x``: quit emulation

- ``Ctrl+a h``: toggle QEMU console

# Usage

Now that Docker is installed in Termux, you can start using it to manage and run containers on your Android device. Refer to the official [Docker documentation](https://docs.docker.com/) for more information on how to use Docker.

# Contributing

If you encounter any issues during the installation process or have suggestions for improvements, please feel free to open an issue or submit a pull request.

# Acknowledgment

- This article inspired from: https://gist.github.com/oofnikj/e79aef095cd08756f7f26ed244355d62

# License

This project is licensed under the [MIT License](LICENSE).

来源：

https://github.com/cyberkernelofficial/docker-in-termux/blob/main/README.md