- add zip package (a6fd982)
- add openssh package (d22bf25)
- ci: disable branch builds (4604656)
- add openssl-dev and g++ packages (04df23e)
- ci: remove branch build. (7c6fee7)
- ci: use CIRCLE_TAG environment variable. (838eda8)
- ci: fix docker image building commands (528fc4d)