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# Podman Update
## Features
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1. Podman 3.2.0 (w/ updated conmon, and runc)
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1. Persists through reboots and firmware updates
1. Full Docker / Docker Compose compatibility!
```sh
$ docker-compose -H 10.0.0.1:2375 up
Starting minecraft_1 ... done
Attaching to minecraft_1
minecraft_1 | [init] Running as uid=1000 gid=1000 with /data as 'drwxrwxr-x 4 1000 1000 240 May 25 11:55 /data'
minecraft_1 | [init] Resolved version given LATEST into 1.16.5
minecraft_1 | [init] Resolving type given VANILLA
minecraft_1 | [init] server.properties already created, skipping
minecraft_1 | [init] Checking for JSON files.
minecraft_1 | [init] Setting initial memory to 1G and max to 1G
minecraft_1 | [init] Starting the Minecraft server...
```
## Requirements
1. You have successfully set up the on boot script described [here ](https://github.com/boostchicken/udm-utilities/tree/master/on-boot-script )
## Customization
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* You can not expose the docker daemon by commenting out the podman service in [00-podman-update.sh ](01-podman-update.sh )
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## Podman Build Process
* This is a custom-built binary by me. It was cross compiled on Ubuntu-20.04 in WSL2.
* The Makefile needs tweaks. I have supplied the [Makefile.patch ](build/Makefile.patch ). Apply it to a fresh [podman ](https://github.com/containers/podman/ ) checkout
* You will need [libseccomp-dev:arm64 ](build/libseccomp-dev_2.2.3-3ubuntu3_arm64.deb ) package installed
* You will need [go ](https://golang.org/doc/install#download ) > 1.12.1 installed
* Setup Cross-Compiler
```sh
sudo apt-get install libc6-arm64-cross libc6-dev-arm64-cross binutils-aarch64-linux-gnu libncurses5-dev build-essential bison flex libssl-dev bc gcc-aarch64-linux-gnu
```
* Compile
```sh
make CC="aarch64-linux-gnu-gcc" local-cross
```
## Steps
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1. Copy [01-podman-update.sh ](01-podman-update.sh ) to /mnt/data/on_boot.d. Make sure anything needed to enable internet connectivity (wpa-supplicant, eap-proxy) runs before it
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1. Comment out the Podman service if you do not wish to expose the Docker/Podman Daemon
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1. Copy [05-install-cni-plugins.sh ](../cni-plugins/05-install-cni-plugins.sh ) to /mnt/data/on_boot.d
1. Recommended: Copy [05-container-common.sh ](../container-common/on_boot.d/05-container-common.sh ) to /mnt/data/on_boot.d
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1. Execute /mnt/data/on_boot.d/[01-podman-update.sh](01-podman-update.sh) and /mnt/data/on_boot.d/[05-install-cni-plugins.sh](../cni-plugins/05-install-cni-plugins.sh)
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1. Verify Podman version
```sh
$ podman version
Version: 3.2.0-dev
API Version: 3.2.0-dev
Go Version: go1.16.4
Git Commit: 78df4f6fb2e2a404ace69219a50652f4335b7ce1-dirty
Built: Tue May 25 04:52:19 2021
OS/Arch: linux/arm64
```
## Docker Compose
There is no docker-compose binary to run on the UDMP yet, so please use docker-compose from a remote system and specify to run on your UDM.
```docker-compose -H 10.0.0.1:2375 up```
You can also use any regular docker binary and do remote management as well
```
$ docker -H 10.0.0.1:2375 ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
608a24fd121e localhost/unifi-os:latest "/sbin/init" 8 weeks ago Up 8 days unifi-os
```
