Using Docker for Building

• Goal: ensure repeatability and reliability of builds across OS (dev’ing on Windows, CI on linux, deploying on unix/solaris)

• Using docker inside a Linux VM on VirtualBox on windows

• Start from docker’s github repo, use vagrant to generate VM with docker configured

• Create docker image from base (eg. ubuntu…)

• Install jdk, maven…

• Snapshot after first build => provides already loaded repository

• Beware of network connectivity. Had an issue while running tests, code was trying to connect to a server that was not reachable, HTTP client hanged in timeout which caused the test to fail as the test itself was timeouted

• Issue with repository update when offline => use host’s local repository as remote

• probably not that useful to build java on linux => only execute tests!!

  • mount local repository
  • run mvn test:test