feat(#medic/cht-sync/issues/174): add steps for docker bastion host & pgadmin for cht-sync#1700

mrjones-plip wants to merge 4 commits intomainmedic/cht-docs:mainfrom

cht-sync-174-bastion-postgres-accessmedic/cht-docs:cht-sync-174-bastion-postgres-accessCopy head branch name to clipboard