updating filepath and users to match machine charm (#3)
## Proposal
This PR implements some minor changes to the pgbouncer container so the pgbouncer-k8s-operator charm has the same user and filesystem as the machine charm.
## Release Notes
- removed pgbouncer user. The charms now use the `postgres` user, which is generated when pgbouncer is installed via apt. However, this user can't access /etc/pgbouncer, so we move the pgbouncer installation to /var/lib/postgresql/pgbouncer.
## Testing
This has been used when building/testing the pgbouncer-k8s-operator charm.
DPE-70 Add CI (#2)
## Proposal
Currently the container for pgbouncer has no CI to lint or build an image. This PR adds these features, as well as a licence, .gitignore file, and a pull request template.
This CI can later be extended to include [DPE-70](https://warthogs.atlassian.net/browse/DPE-70?atlOrigin=eyJpIjoiZTM2NTU4ZGNjZjY4NGQxOTkyYWJjNWIyZjkzMjkzMmYiLCJwIjoiaiJ9), automatically deploying this container to dockerhub.
## Release Notes
- Added linting CI
- Added build & deploy test CI
- Added License
- Added pull request template
## Testing
These have been run on a [personal fork](https://github.com/WRFitch/pgbouncer-container/actions?query=branch%3ADPE-70-add-ci++).
## Commit History
* preliminary ubuntu container added, featuring some example config files so pgbouncer can come online
* removed -d flag from entrypoint
* added entrypoint script
Entrypoint script generates pgbouncer.ini and userlist.txt from the documented environment variables, removing the need for static defaults and allowing easier control from the charm.
* updating entrypoint script & defaults
Dockerfile no longer sets port default, nor does it expose the port, since we want to do this at runtime and not buildtime.
entrypoint.sh moved to /
Added & documented defaults in entrypoint.sh and readme.md respectively. If there's no value for PGB_DATABASES, error out since we have no databases to connect to.
added set -euo pipefail to entrypoint.sh, which ensures that the script fails if any of its components fail.
* removed superfluous .gitignore and updated readme
* fixed formatting in readme.md
* added licence, gitignore, and CI
* Added pull request template
* adding licence and updating name
* Create lint.yml
* Create pull_request.yml
* fix dockerfile naming
* fixing dockerfile linting
* removing accidental duplicated CI
* fixed dockerfile access again
* updated dockerfile and entrypoint based on linter feedback
* pr workflow fix
* changing image label and removing loop stuff
* renaming files and removing weird readme info
Add Basic Container (#1)
* preliminary ubuntu container added, featuring some example config files so pgbouncer can come online
* removed -d flag from entrypoint
* added entrypoint script
Entrypoint script generates pgbouncer.ini and userlist.txt from the documented environment variables, removing the need for static defaults and allowing easier control from the charm.
* updating entrypoint script & defaults
Dockerfile no longer sets port default, nor does it expose the port, since we want to do this at runtime and not buildtime.
entrypoint.sh moved to /
Added & documented defaults in entrypoint.sh and readme.md respectively. If there's no value for PGB_DATABASES, error out since we have no databases to connect to.
added set -euo pipefail to entrypoint.sh, which ensures that the script fails if any of its components fail.
* removed superfluous .gitignore and updated readme
