The challenge of connecting Docker containers from the host is to
resolve a predefined hostname to an IP address assigned at runtime. For
Unix-like platforms such as Ubuntu, it can be done by either hard-code
the IP addresses or creating a DNS server. Both of them are not
user-friendly which need root permission to modify system files.
Avahi is a free Zeroconf implementation and provides multicast DNS
(mDNS) service discovery. It enables Docker containers to publish their
services on a local network. For the host systems supporting mDNS
technology, they will automatically discover the services in a local
domain without extra user-efforts.
Task-number: QTQAINFRA-1686
Change-Id: I1ef464a455cef5d331a3e2eb0194e2741172ef95
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
Reviewed-by: Ryan Chu <ryan.chu@qt.io>
Reviewed-by: Jędrzej Nowacki <jedrzej.nowacki@qt.io>
Build and cache docker images based on the configurations in testserver.
1. Download and install the docker engine and docker-compose extension.
2. Append address and hostname of test servers to CI environment.
3. Build and tag the docker images by the SHA-1 of server context.
Task-number: QTQAINFRA-1686
Change-Id: Ib9b58d45856682ddec04af045e1eab18e14a85fb
Reviewed-by: Jędrzej Nowacki <jedrzej.nowacki@qt.io>
Reviewed-by: Frederik Gladhorn <frederik.gladhorn@qt.io>
