Add docker setup for bulk export

[elsaperelli]

Summary

This PR sets up a working Docker environment for this server and changes some things so that it can be run on our abacus-dev ECE.

New behavior

Server can be run with Docker! Also pushed this repository to docker hub and added it to abacus-dev.

Code changes

• .env - adds PUBLIC_BULK_SERVER variable and changes PORT to 3000 for consistency
• .env.test - adds PUBLIC_BULK_SERVER variable
• Dockerfile - upgrades node, adds ENV HOST and ENV PORT variables
• docker-compose.example.yml - example docker-compose for future reference (similar to that in the measure-repository)
• docker-compose.yml - add redis, upgrade mongo, add PUBLIC_BULK_SERVER
• postTransactionBundles.js/bulkstatus.service.js/export.service.js/bulkstatus.service.test.js - use PUBLIC_BULK_SERVER

Testing guidance

• npm run check
• Start up the server with docker with docker compose up --build
• Use Insomnia to ensure functionality is the same as if the server was spun up locally. See PR Add support for the _elements param #39 for example Insomnia requests to get started.
• Start the server locally to ensure that all runs the same.

[github-actions]

Coverage report

St.❔	Category	Percentage	Covered / Total
🟡	Statements	79.59% (-0.96% 🔻)	468/588
🟡	Branches	66.53% (-1.08% 🔻)	167/251
🟡	Functions	77.89%	74/95
🟢	Lines	80.03% (-0.84% 🔻)	461/576

Show files with reduced coverage 🔻

St.❔	File	Statements	Branches	Functions	Lines
🔴	... / bundle.service.js	13.85% (-1.67% 🔻)	0%	0%	14.06% (-1.45% 🔻)

Test suite run success

76 tests passing in 7 suites.

Report generated by 🧪jest coverage report action from ab5001f

[lmd59]

Testing through things a bit more, but a couple of small initial suggestions

[hossenlopp]

Some of the stuff in the docker-compose can be paired down and moved to the Dockerfile.

Suggest renaming PUBLIC_BULK_SERVER to something that implies it is the base URL. Perhaps BULK_BASE_URL.

We could also use a script for running and pushing the build like we have in measure-repository service.

[elsaperelli]

@hossenlopp I first misread your comment thinking you asked for a bundle upload script...but now we have both! Added a directory-upload.sh script and a docker-build.sh script like we do in the measure-repository.

[lmd59]

One small comment/question. Otherwise I think it looks good!