[bug]: Built in Docker container doesn't start a working server

[di-repo]

Describe the bug When a docker container is started from the provided script it doesn't start a healthy working website. After a successful build, the webserver instead of loading Venia returns Invalid Host header

To Reproduce Steps to reproduce the behavior:

1. Go to pwa-studio root
2. Execute bash docker/run-docker
3. Wait for the image to build and for the dev server to start
4. Visit https://pwa-docker.localhost in browser. Instead of PWA, Invalid Host Header is shown

Expected behavior I would expect Venia homepage to load.

Additional context When the dev server is loaded it displays the following message:

PWADevServer ready at http://0.0.0.0:8080/
GraphQL Playground ready at http://0.0.0.0:8080/graphiql 

I would expect here the domain specified as a DEV_SERVER_HOST to show, but I might be wrong on this.

Please complete the following device information:

• Device [e.g. iPhone6, PC, Mac, Pixel3]: PC
• OS [e.g. iOS8.1, Windows 10]: Ubuntu 18
• Browser [e.g. Chrome, Safari]: Firefox
• Browser Version [e.g. 22]: 68
• Magento Version: MAGENTO_BACKEND_URL=https://master-7rqtwti-mfwmkrjfqvbjk.us-4.magentosite.cloud/
• PWA Studio Version: 3.0
• NPM version npm -v: supplied from container
• Node Version node -v: supplied from container

Please let us know what packages this bug is in regards to:

• [x] venia-concept
• [x] pwa-buildpack
• [ ] peregrine
• [ ] pwa-devdocs
• [ ] upward-js
• [ ] upward-spec

[dani97]

I too experience this issue. Because of this, I could not check service worker :(

[awilcoxa]

for follow up with @cherdman regarding docker resourcing