Problem installing Canvas LMS using docker - docker

Question

I am trying to install a development version of Canvas LMS using this Quick Start Guide.
Input:
./script/docker_dev_setup.sh
The first time I ran it, I had the following output:
|\\ ___|\\ \_\_ |\\ \______\_ |\\ \\ / /|\\ \_\_ |\\ \
\\ \\ \_|\\ \\ |\\ \\ \\ \\ \\ \\ \\ \\ / / | \\ |\\ \\ \\ \___|\_
\\ \\ \\ \\ \\ \_\_ \\ \\ \\ \\ \\ \\ / / / \\ \\ \_\_ \\ \_ \
\\ \\ \_\\ \\ \\ \\ \\ \\ \\ \\ \\ \\ / / \\ \\ \\ \\ |__|\\ \
\\ \____\\ \__\\ \_\\ \__\\ \__\\ \__/ / \\ \__\\ \__\____\_\\ \
|__\_\____||||__||| ||||/ ||||\_\
|_\_\_|
Welcome! This script will guide you through the process of setting up a
Canvas development environment.
Log file is /home/mike/canvas-lms/log/docker_dev_setup.log
> It looks like you're using Linux. Let's set that up.
> Checking Dependencies...
> script/common/utils/common.sh: line 159: ((: 0
> 0
> 0
> 0 : syntax error in expression (error token is "0
> 0
> 0 ")
> Canvas recommends using dory for a reverse proxy allowing you to
> access canvas at http://canvas.docker. Detailed instructions
> are available at https://github.com/FreedomBen/dory.
> If you want to install it, run 'gem install dory' then rerun this script.
> Would you like to skip dory? \[y/n\] n
> Install dory then rerun this script.
So, I stalled dory and ran the script again.
Input:
./script/docker_dev_setup.sh
Output after installing dory:
______________________________________________
|\\ ___|\\ \_\_ |\\ \______\_ |\\ \\ / /|\\ \_\_ |\\ \
\\ \\ \_|\\ \\ |\\ \\ \\ \\ \\ \\ \\ \\ / / | \\ |\\ \\ \\ \___|\_
\\ \\ \\ \\ \\ \_\_ \\ \\ \\ \\ \\ \\ / / / \\ \\ \_\_ \\ \_ \
\\ \\ \_\\ \\ \\ \\ \\ \\ \\ \\ \\ \\ / / \\ \\ \\ \\ |__|\\ \
\\ \____\\ \__\\ \_\\ \__\\ \__\\ \__/ / \\ \__\\ \__\____\_\\ \
|__\_\____||||__||| ||||/ ||||\_\
|_\_\_|
Welcome! This script will guide you through the process of setting up a
Canvas development environment.
Log file is /home/mike/canvas-lms/log/docker_dev_setup.log
> It looks like you're using Linux. Let's set that up.
> Checking Dependencies...
> script/common/utils/common.sh: line 159: ((: 0
> 0
> 0
> 0 : syntax error in expression (error token is "0
> 0
> 0 ")
> Starting dory...
> /usr/local/bin/dory:25:in `load': cannot load such file -- /var/lib/gems/3.0.0/gems/dory-1.2.0/bin/dory (LoadError) from /usr/local/bin/dory:25:in `\<main\>'
> /usr/local/bin/dory:25:in `load': cannot load such file -- /var/lib/gems/3.0.0/gems/dory-1.2.0/bin/dory (LoadError) from /usr/local/bin/dory:25:in `\<main\>'
> Something went wrong with dory! Exiting script.
/o\\ Something went wrong. Check /home/mike/canvas-lms/log/docker_dev_setup.log for details.
I tried to track down the second error:
/usr/local/bin/dory:25:in `load': cannot load such file -- /var/lib/gems/3.0.0/gems/dory-1.2.0/bin/dory (LoadError)
from /usr/local/bin/dory:25:in `<main>'
/usr/local/bin/dory:25:in `load': cannot load such file -- /var/lib/gems/3.0.0/gems/dory-1.2.0/bin/dory (LoadError)
from /usr/local/bin/dory:25:in `<main>'
I open this file and see:
#!/usr/bin/ruby3.0
#
# This file was generated by RubyGems.
#
# The application 'dory' is installed as part of a gem, and
# this file is here to facilitate running it.
#
require 'rubygems'
Gem.use_gemdeps
version = ">= 0.a"
str = ARGV.first
if str
str = str.b[/\A_(.*)_\z/, 1]
if str and Gem::Version.correct?(str)
version = str
ARGV.shift
end
end
if Gem.respond_to?(:activate_bin_path)
load Gem.activate_bin_path('dory', 'dory', version)
else
gem "dory", version
load Gem.bin_path("dory", "dory", version)
end
The error appears to be here:
if Gem.respond_to?(:activate_bin_path)
load Gem.activate_bin_path('dory', 'dory', version)
else
Can I somehow change the path to allow the process to continue, or is there something that I can do to the folder structure that will allow it to continue?