Docker read_timeout apparently not working

[StuporHero]

Following the documentation, I have a machine_image that looks like the following:
`machine_image 'trx-enterprise' do
role 'middleware-image'

machine_options docker_options: {
base_image: {
name: 'oraclelinux',
tag: '6'
}
},
docker_connection: {
read_timeout: 7200
}
end
`

The middleware-image role installs an Oracle Forms & Reports home which takes longer than 10 minutes, and it is never allowed to complete thanks to the timeout lasting only 10 minutes despite having set read_timeout to 2 hours based on README.md.