ERROR: Service failed to build: invalid reference format

Docker gave me this error today when running a Running the build command manually instead of using docker-compose gave me: The issue is with the image tag: “:1.16:1“. It must be “:1.16.1“. Just as a reminder of how important it is to be thorough and, of course, what the error might mean if you encounter… Continue Reading ERROR: Service failed to build: invalid reference format

Swarm manager active but down and Dockerd start: no space left on device

Today I ran into this a broken swarm. I have not figured out why it would report itself as “reachability: active, status: down”. The manager But fixing the manager was somewhat easy. It would not leave the swarm, it would not respond with “up” to “systemctl restart docker” calls. The “down” status would also survive… Continue Reading Swarm manager active but down and Dockerd start: no space left on device