Docker compatibility among Docker 1.12.6 and 19.03.5CE

Docker Engine General
1

We are using DOcker 1.12.6 to build docker images. we are using redhat EE 7.
Client:
Version: 1.12.6
API version: 1.24
Go version: go1.6.4
Git commit: 78d1802
Built: Tue Jan 10 20:20:01 2017
OS/Arch: linux/amd64

Server:
Version: 1.12.6
API version: 1.24
Go version: go1.6.4
Git commit: 78d1802
Built: Tue Jan 10 20:20:01 2017
OS/Arch: linux/amd64

But we want to upgrade the docker engine to 19.03.5 CE in target hosts.

Any compatibility issue?

2

I have a new booted Raspbian Buster Lite on Raspberry Pi Model 3 B plus, updated to the latest patch with the latest stable Docker CE installed. The issue is the the docker is not started by the systemd on boot. Manually executing sudo systemctl start docker wil l start it without problem. It looks like docker.socket cannot start on boot.
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