Ubuntu 20.10 - docker up issue

[conloos]

Hi,

this is my .env:

# sshd ports
UBUNTUC_PORT_SSHD=2221
UBUNTU1_PORT_SSHD=2222
UBUNTU2_PORT_SSHD=2223
UBUNTU3_PORT_SSHD=2224
CENTOS1_PORT_SSHD=2225
CENTOS2_PORT_SSHD=2226
CENTOS3_PORT_SSHD=2227

# ttyd (web terminal) ports
UBUNTUC_PORT_TTYD=7681
UBUNTU1_PORT_TTYD=7682
UBUNTU2_PORT_TTYD=7683
UBUNTU3_PORT_TTYD=7684
CENTOS1_PORT_TTYD=7685
CENTOS2_PORT_TTYD=7686
CENTOS3_PORT_TTYD=7687

# Shared config volume
CONFIG=/home/hostadmin/Workspace/diveintoansible-lab/config

# Shared home directories
ANSIBLE_HOME=/home/hostadmin/Workspace/diveintoansible-lab/ansible_home

After starting docker-compose i get this error:

ERROR: Version in "./docker-compose.yaml" is unsupported. You might be seeing this error because you're using the wrong Compose file version. Either specify a supported version (e.g "2.2" or "3.3") and place your service definitions under the `services` key, or omit the `version` key and place your service definitions at the root of the file to use version 1.
For more on the Compose file format versions, see https://docs.docker.com/compose/compose-file/

[spurin]

Hi @conloos,

Can you please run docker-compose --version and share the details of the version you are running.

Cheers

[conloos]

Hi @spurin,

hostadmin@udemy-ansible:~$ docker-compose --version
docker-compose version 1.25.0, build unknown

After installing:

• https://docs.docker.com/engine/install/ubuntu/
• https://docs.docker.com/compose/install/

i get it work without the described error.

At the moment the compose is running.

Thanks Frank

[spurin]

Thanks @conloos,

I think it may have been an old version of docker or docker-compose that was causing the problem. The following matrix provides version support - https://docs.docker.com/compose/compose-file/

Good to see you've resolved it. I think ... possibly tweaking the version line at the top of the file may have also worked. Will have a look through the spec and see if there's anything actually tying this to 3.8 (which is current).

Hope you enjoy the rest of the course

[conloos]

@spurin now it works

I think

hostadmin@udemy-ansible:~$ apt search docker-compose
Sorting... Done
Full Text Search... Done
docker-compose/groovy,now 1.25.0-1 all [installed]
  Punctual, lightweight development environments using Docker

is not working.

[spurin]

Re-opened the issue.

Can you please run and share the the following -

docker-compose --version
docker --version
apt list --installed | grep docker

[conloos]

Hi @spurin ,

sorry for the delay.

hostadmin@udemy-ansible:~$ docker-compose --version
docker-compose version 1.27.4, build 40524192

hostadmin@udemy-ansible:~$ docker --version
Docker version 20.10.1, build 831ebea

hostadmin@udemy-ansible:~$ apt list --installed | grep docker

WARNING: apt does not have a stable CLI interface. Use with caution in scripts.

docker-ce-cli/focal,now 5:20.10.1~3-0~ubuntu-focal amd64 [installed]
docker-ce-rootless-extras/focal,now 5:20.10.1~3-0~ubuntu-focal amd64 [installed,automatic]
docker-ce/focal,now 5:20.10.1~3-0~ubuntu-focal amd64 [installed]

happy new year, greetings frank

PS: To explain the facts again: your containers cannot be started with the "docker-compose",
which is supplied by default with ubuntu 20.04 / 20.10.

After installing:

• https://docs.docker.com/engine/install/ubuntu/
• https://docs.docker.com/compose/install/

i get it work without the error described.

[spurin]

Wow,

Thanks @conloos for confirming and the detail provided. I imagine that this will be useful also to others.

Appreciate your feedback and wish you the best also, for the new year!