Build fails using docker on Arch Linux

[ghost]

Describe the bug
Docker build fails on Linux 5.16.1-arch1-1 #1 SMP PREEMPT x86_64 GNU/Linux and Docker version 20.10.12, build e91ed5707e.

To Reproduce
Install Arch Linux (e.g., in a VM), then:

sudo pacman -Syu docker
mkdir $HOME/temp
cd $HOME/temp
git clone https://github.com/tribler/tribler --recursive
docker build -t triblercore/triblercore:latest .

Expected
Docker build succeeds.

Actual
Error:

unable to prepare context: unable to evaluate symlinks in Dockerfile path: lstat $HOME/temp/Dockerfile: no such file or directory

[drew2a]

Related to #6740

[qstokkink]

Now that we have a GitHub Package, the following should work:

docker pull ghcr.io/tribler/tribler:sha256-383fc7fce3ae30badc3f1626971505a744b2a451385bf698232a176ef671fc1a

This still needs to be tested though.

[qstokkink]

The instructions at https://tribler.readthedocs.io/en/latest/basics/docker.html should also work for Arch Linux.