🐞 Bug fail to start dockerd with rootless

[EmissaryD]

Describe the bug
I use fydeos (a distribution of chromiumos) and crew to install docker(have kvm), but fail to start docker with systemctl --user start docker
otherwise, systemctl's output has something wrong, if I use root to start dockerd like nohup dockerd 2>&1 >/dev/null &, docker will write to /var/... that cant use it

To Reproduce
Steps to reproduce the behavior:

1. I executed this command:

   systemctl --user start docker
   systemctl --user status docker

   Output:

   /usr/local/bin/systemctl:2050: SyntaxWarning: invalid escape sequence '\w'
     expanded = re.sub("[$](\w+)", lambda m: get_env1(m), cmd.replace("\\\n",""))
   /usr/local/bin/systemctl:2052: SyntaxWarning: invalid escape sequence '\w'
     new_text = re.sub("[$][{](\w+)[}]", lambda m: get_env2(m), expanded)
   /usr/local/bin/systemctl:2144: SyntaxWarning: invalid escape sequence '\w'
     cmd3 = re.sub("[$](\w+)", lambda m: get_env1(m), cmd2)
   /usr/local/bin/systemctl:2148: SyntaxWarning: invalid escape sequence '\w'
     newcmd += [ re.sub("[$][{](\w+)[}]", lambda m: get_env2(m), self.expand_special(part, conf)) ]
   docker.service - Docker Application Container Engine
       Loaded: loaded (/usr/local/.config/systemd/user/docker.service, enabled)
       Active: inactive (dead)
   

Expected behavior
A clear and concise description of what you expected to happen.

Screenshots
If applicable, add screenshots to help explain your problem.

Environment: Paste the output of crew sysinfo -v between the two *** below

---

Expand

• Architecture: x86_64 (x86_64)

• Processor vendor: GenuineIntel

• User space: 64-bit

• Chromebrew Kernel version: 5.4

• Chromebrew Running in Container: false

• Chromebrew version: 1.40.0

• Chromebrew prefix: /usr/local

• Chromebrew libdir: /usr/local/lib64

• Last update in local repository: 2946eb5 findutils => 4.9.0 (#9008) (16 hours ago)

• OS variant: Chromium OS

• OS version: ``

• OS channel: stable-channel

***

Additional context
Add any other context about the problem here.

What I think needs to be done:

  - [ ] step one
  - [ ] step two

[satmandu]

Docker is a WIP.

Patches would be welcomed!