* Use retry func while trying to ping SQL datastore
- implements retry func specifically for SQL datastore ping
- fmt fixes
- using sqlx.Db.PingContext instead of sqlx.Db.Ping
- propogate context to SQL datastore
* Use alpine images to make tests take less time
* use PG alpine
* use Minio alpine
* no official alpine distro for MySQL, uhhh :(
* install swagger tool instead of docker image
* use retry func to confirm that datastore is okay before running tests
* Store swagger tool at Fn during CI time
somehow it's a problem to put binary to ${GOPATH}/bin
* Adjust swagger tool reference path
* Revert minio image
* Use amd64/alpine-based swagger tool image for API spec validation
* Cleanup
