Docker Compose V2 up does not allow a dot in a project name

[DaleyKD]

Description
Docker Compose V2 does not allow a period/dot in a project name when using the up command.

Steps to reproduce the issue:

1. docker compose -p my.project up

Describe the results you received:
Notice that the project name ends up being just "my".

Describe the results you expected:
The project name should be "my.project." Please note, it worked this way in beta versions of V2.

Additional information you deem important (e.g. issue happens only occasionally):
When running docker compose -p my.project down, it attempts to stop/remove "my.project" instead of "my". So, there's a discrepancy between up and down.

Output of docker compose version:

PS C:\> docker compose version
Docker Compose version v2.0.0

Output of docker info:

PS C:\> docker info
Client:
 Context:    default
 Debug Mode: false
 Plugins:
  buildx: Build with BuildKit (Docker Inc., v0.6.3)
  compose: Docker Compose (Docker Inc., v2.0.0)
  scan: Docker Scan (Docker Inc., v0.8.0)

Server:
 Containers: 5
  Running: 5
  Paused: 0
  Stopped: 0
 Images: 62
 Server Version: 20.10.8
 Storage Driver: overlay2
  Backing Filesystem: extfs
  Supports d_type: true
  Native Overlay Diff: true
  userxattr: false
 Logging Driver: json-file
 Cgroup Driver: cgroupfs
 Cgroup Version: 1
 Plugins:
  Volume: local
  Network: bridge host ipvlan macvlan null overlay
  Log: awslogs fluentd gcplogs gelf journald json-file local logentries splunk syslog
 Swarm: inactive
 Runtimes: io.containerd.runtime.v1.linux runc io.containerd.runc.v2
 Default Runtime: runc
 Init Binary: docker-init
 containerd version: e25210fe30a0a703442421b0f60afac609f950a3
 runc version: v1.0.1-0-g4144b63
 init version: de40ad0
 Security Options:
  seccomp
   Profile: default
 Kernel Version: 5.10.47-linuxkit
 Operating System: Docker Desktop
 OSType: linux
 Architecture: x86_64
 CPUs: 7
 Total Memory: 23.49GiB
 Name: docker-desktop
 ID: JDMB:56T7:3WIK:ZVF6:DCOW:GJUW:6TGO:CPUY:4GEX:JPIY:AJG3:J6VE
 Docker Root Dir: /var/lib/docker
 Debug Mode: false
 Registry: https://index.docker.io/v1/
 Labels:
 Experimental: false
 Insecure Registries:
  127.0.0.0/8
 Live Restore Enabled: false

Additional environment details:

[ndeloof]

This has been fixed by compose-spec/compose-go#197

[DaleyKD]

Thanks!

[DaleyKD]

I tested again in Docker Desktop 4.2.0 (70708). Still an issue. Not sure when this is going to be released.