Regression on `COMPOSE_PROJECT_NAME` since 2.4.0 (available on 2.4.1)

[xunleii]

Description

Compose 2.4.0/2.4.1 does not allow uppercase characters. This is visible when we create a new project using COMPOSE_PROJECT_NAME with uppercase, the name visible with docker-compose ls will be lowercase, and no other commands will be used except docker-compose down (I can't explain why we have strings.ToLower() only on this command).

Steps to reproduce the issue:

1. COMPOSE_PROJECT_NAME=AAAA-bbbb docker-compose up -d
2. COMPOSE_PROJECT_NAME=AAAA-bbbb docker-compose ps
3. COMPOSE_PROJECT_NAME=aaaa-bbbb docker-compose ps

Describe the results you received:

Nothing displayed on step 2. but yes in step 3.

Describe the results you expected:

The step 2. should return the container list but not 3.

Additional information you deem important (e.g. issue happens only occasionally):

This issue is not available on v2.3.4

Output of docker compose version:

Docker Compose version v2.4.1

Output of docker info:

Client:
 Context:    default
 Debug Mode: false
 Plugins:
  buildx: Docker Buildx (Docker Inc., v0.8.2)
  compose: Docker Compose (Docker Inc., v2.4.1)
  sbom: View the packaged-based Software Bill Of Materials (SBOM) for an image (Anchore Inc., 0.6.0)
  scan: Docker Scan (Docker Inc., v0.17.0)

Server:
 Containers: 2
  Running: 2
  Paused: 0
  Stopped: 0
 Images: 3
 Server Version: 20.10.14
 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.runc.v2 io.containerd.runtime.v1.linux runc
 Default Runtime: runc
 Init Binary: docker-init
 containerd version: 3df54a852345ae127d1fa3092b95168e4a88e2f8
 runc version: v1.0.3-0-gf46b6ba
 init version: de40ad0
 Security Options:
  seccomp
   Profile: default
 Kernel Version: 5.10.16.3-microsoft-standard-WSL2
 Operating System: Docker Desktop
 OSType: linux
 Architecture: x86_64
 CPUs: 8
 Total Memory: 7.676GiB
 Name: docker-desktop
 ID: YK6L:HSDW:ZL45:TJHA:MRX6:4FWY:CCCN:UWEG:ORIQ:VMGW:VGPV:KXSA
 Docker Root Dir: /var/lib/docker
 Debug Mode: false
 HTTP Proxy: http.docker.internal:3128
 HTTPS Proxy: http.docker.internal:3128
 No Proxy: hubproxy.docker.internal
 Registry: https://index.docker.io/v1/
 Labels:
 Experimental: false
 Insecure Registries:
  hubproxy.docker.internal:5000
  127.0.0.0/8
 Live Restore Enabled: false

WARNING: No blkio throttle.read_bps_device support
WARNING: No blkio throttle.write_bps_device support
WARNING: No blkio throttle.read_iops_device support
WARNING: No blkio throttle.write_iops_device support

Additional environment details:

Running in WSL2 but issue also seen in our CI using DIND.

[xunleii]

It also fails using COMPOSE_PROJECT_NAME=V2.1.0 because it will be replaced (sanitized?) with v210