colima takes ~30s to boot

### Describe the Bug
A clear and concise description of what the bug is.

```
$ time colima start
INFO[0000] using docker runtime
INFO[0000] starting colima
INFO[0000] starting ... context=vm
INFO[0022] provisioning ... context=docker
INFO[0022] starting ... context=docker
INFO[0027] waiting for startup to complete ... context=docker
INFO[0027] done

real 0m27.816s
user 0m0.191s
sys 0m0.214s
```

### Version

#### Colima Version:

```
colima version development
git commit: unknown

runtime: docker
arch: aarch64
client: v20.10.14
server: v20.10.11
```

What is the output of `colima version`

#### Lima Version:

```
limactl version 0.10.0
```

What is the output of `limactl --version`

#### Qemu Version

What is the output of `qemu-img --version`

```
qemu-img version 7.0.0
Copyright (c) 2003-2022 Fabrice Bellard and the QEMU Project developers
```

### Operating System

- [ ] macOS Intel
- [x] macOS m1
- [ ] Linux

### To Reproduce

Steps to reproduce the behavior:

1. `time colima start`

### Expected behavior

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

It should start in about a third of the time.

### Additional context

Add any other context about the problem here.

Booting a minimal NixOS VM takes about 10 seconds in UTM and I can't imagine docker needing much time either. Something must be off about the Alpine configuration.