add support to boot2docker

```
E: Unable to locate package linux-headers-4.4.86-boot2docker
E: Couldn't find any package by regex 'linux-headers-4.4.86-boot2docker'
checking /usr/src/kernels/4.4.86-boot2docker
checking /usr/src/linux-headers-4.4.86-boot2docker
Failed to install/locate kernel headers for 4.4.86-boot2docker
```