~/docker/nextcloud$ docker run hello-world
ERROR: ld.so: object '/opt/lib/libmediaclient.so' from /etc/ld.so.preload cannot be preloaded (cannot open shared object file): ignored.
ERROR: ld.so: object '/opt/lib/libmediaclient.so' from /etc/ld.so.preload cannot be preloaded (cannot open shared object file): ignored.
ERROR: ld.so: object '/opt/lib/libmediaclient.so' from /etc/ld.so.preload cannot be preloaded (cannot open shared object file): ignored.
Unable to find image 'hello-world:latest' locally
latest: Pulling from library/hello-world
1b930d010525: Pull complete
Digest: sha256:2557e3c07ed1e38f26e389462d03ed943586f744621577a99efb77324b0fe535
Status: Downloaded newer image for hello-world:latest
ERROR: ld.so: object '/opt/lib/libmediaclient.so' from /etc/ld.so.preload cannot be preloaded (cannot open shared object file): ignored.
ERROR: ld.so: object '/opt/lib/libmediaclient.so' from /etc/ld.so.preload cannot be preloaded (cannot open shared object file): ignored.

Hello from Docker!
This message shows that your installation appears to be working correctly.

To generate this message, Docker took the following steps:
 1. The Docker client contacted the Docker daemon.
 2. The Docker daemon pulled the "hello-world" image from the Docker Hub.
    (amd64)
 3. The Docker daemon created a new container from that image which runs the
    executable that produces the output you are currently reading.
 4. The Docker daemon streamed that output to the Docker client, which sent it
    to your terminal.

To try something more ambitious, you can run an Ubuntu container with:
 $ docker run -it ubuntu bash

Share images, automate workflows, and more with a free Docker ID:
 https://hub.docker.com/

For more examples and ideas, visit:
 https://docs.docker.com/get-started/

docker: Error response from daemon: OCI runtime state failed: invalid character 'E' looking for beginning of value: unknown.
ERRO[0006] error waiting for container: context canceled