This changes two URLs from http to https and it fixes a Dockerfile to stop skipping certificate validation. It also adds the ca-certificates package to that Dockerfile example. Docker-DCO-1.1-Signed-off-by: Cristian Staretu <cristian.staretu@gmail.com> (github: unclejack) Upstream-commit: 73a277eb2fd66b815b11e9d2caff2c31c18a0854 Component: engine