ubuntu 20.04 docker 领事形象 - 退出 state

Question

followed: https://www.digitalocean.com/community/tutorials/how-to-install-and-use-docker-on-ubuntu-20-04 (those steps always worked for lower version of ubuntu)

docker run -d --name=local-consul -p 8500:8500 -e CONSUL_BIND_INTERFACE=eth0 consul docker

(as I always do)

docker ps

empty

docker ps -a

status : "Exited (0) 4 seconds ago"

docker logs consul-local

==> Found address '172.17.0.2' for interface 'eth0', setting bind option... /usr/local/bin/docker-entrypoint.sh: exec: line 98: docker: not found

docker --version

Docker version 19.03.11, build 42e35e61f3

systemctl status docker

● docker.service - Docker Application Container Engine Loaded: loaded (/lib/systemd/system/docker.service; enabled; vendor preset: enabled) Active: active (running) since Mon 2020-06-01 14:30:59 EDT; 22min ago TriggeredBy: ● docker.socket Docs: https://docs.docker.com Main PID: 46472 (dockerd) Tasks: 56 Memory: 194.9M CGroup: /system.slice/docker.service └─46472 /usr/bin/dockerd -H fd:// --containerd=/run/containerd/containerd.sock

Question: How to fix /usr/local/bin/docker-entrypoint.sh: exec: line 98: docker: not found

I've checked. I do not have this file on my local machine: /usr/local/bin/docker-entrypoint.sh

Answer 1

-d tells Docker to detach and the run the container in the background. It has nothing to do with when the container exits. The container will exit when the entrypoint process terminates. In this case, the hello-world container just prints a message and exits, so it will not continue running, detached or not.

Edit:

docker run -d --name=local-consul -p 8500:8500 -e CONSUL_BIND_INTERFACE=eth0 consul docker

If you look at the entrypoint script for the consul image, you'll see it runs exec "$@" . So the docker run command above will attempt to run docker within the consul container. That command doesn't exist in the container, so you get docker: not found .

You likely just want to run the container without additional arguments:

docker run -d --name=local-consul -p 8500:8500 -e CONSUL_BIND_INTERFACE=eth0 consul

See https://hub.docker.com/_/consul