docker got popular because it had better DX (better tooling), it was like a super lightweight VM (and initially people really wanted to put init and SSH into co

docker got popular because it had better DX (better tooling), it was like a super lightweight VM (and initially people really wanted to put init and SSH into containers) easy but powerful, it's not just packaging, it's also a very basic deployment system too. (docker ps) and said better allowed a relatively foolproof cross-platform develop-deploy loop.