Minor fixes to envsubst for webapps. Somewhat specially treated is `LACONIC_HOSTED_CONFIG_homepage` which can be used to replace the homepage in package.json. With react, this gets an extra `/` though, which we need to remove.
Reviewed-on: cerc-io/stack-orchestrator#746
Co-authored-by: Thomas E Lackey <telackey@bozemanpass.com>
Co-committed-by: Thomas E Lackey <telackey@bozemanpass.com>
This fixes three issues:
1. #644 (build output)
2. #646 (error on startup)
3. automatic env quote handling (related to 2)
For the build output we now have:
```
#################################################################
Built host container for /home/telackey/tmp/iglootools-home with tag:
cerc/iglootools-home:local
To test locally run:
docker run -p 3000:3000 cerc/iglootools-home:local
```
For the startup error, it was hung waiting for the "success" message from the next generate output (itself a workaround for a nextjs bug fixed by this PR we submitted: https://github.com/vercel/next.js/pull/58276).
I added a timeout which will cause it to wait up to a maximum _n_ seconds before issuing:
```
ERROR: 'npm run cerc_generate' exceeded CERC_MAX_GENERATE_TIME.
```
On the quoting itself, I plan on adding a new run-webapp command, but I realized I had a decent spot to do effect the quote replacement on-the-fly after all when I am already escaping the values for insertion/replacement into JS.
The "dequoting" can be disabled with `CERC_RETAIN_ENV_QUOTES=true`.
