OpenHistoricalMap deploy based on the osm-seed chart

This repo is used for deploying to Staging and Production for the main parts of the stack that runs OpenHistoricalMap.org.

Commits to main and staging will kick off a Github Actions build process that takes somewhere between 30 and 45 minutes.

You can't really test this code locally, which can make it tempting to commit changes directly to staging or main. Don't do it! Since every commit kicks off a build, it is still best practice to make all changes in a branch so you can review them, or ask someone else to do so, before merging in and kicking off a build.

For updating the OHM website, which is a common reason for a deploy, see these lines:

https://github.com/OpenHistoricalMap/ohm-deploy/blob/main/images/web/Dockerfile#L118-L121

# change the echo here with a reason for changing the commithash
RUN echo 'Set the right commit: iD and staging tiles for staging website'
RUN git fetch
RUN git checkout 293d27abe0ed16abba7dd5849a29a5d3c7de4588

Change the message as appropriate and the commit hash to whatever commit in the ohm-website repo that you want to deploy.

By practice, commit hashes from the staging branch on ohm-website should go to staging here and commit hashes from production on ohm-website should go to main here.

That said, there are times when we have published feature branches to staging to allow them to be viewed and tested by people who are not running the stack locally. That is fine, but should not be done for main.

This is what the process of making changes to openhistocialmap.org looks like:

1. Based on staging, make a feature-branch at ohm-website like newinspector-stack or map-style-202101 or similar.
2. Running the ohm-website locally, make and test your changes locally in that feature branch. You can and should push work-in-progeress changes to your feature branch on github.com, so we can all see what's happening if needed. But don't commit directly to staging on ohm-website.
3. When your changes are working as desired, submit a PR from your feature branches into staging. Assign Dan, Sanjay, or Sajjad to review that PR. We can merge into staging and then update the commit hash on the staging brnach of this repo, here https://github.com/OpenHistoricalMap/ohm-deploy/blob/staging/images/web/Dockerfile#L119-L121
4. When we do that and push here, that kicks off a Github Actions automated deploy that will make your changes live on https://staging.openhistoricalmap.org.
5. Test on Staging. This is when we can review with folks who are not running locally, share with the community, etc.
6. When we're all happy with the code on Staging, we go back to ohm-website repo and make a PR of staging into production and then update the commit hash on the main branch in this OHM-deploy repo, which then kicks off deploy to production to make changes live on https://openhistoricalmap.org.