Allow an environment variable of e.g "ALL" for debugging purposes when testing docker-socket-proxy with a new Docker client

[jhogan05]

I used docker-socket-proxy to allow my Mac OS to access a windows Docker Desktop with WSL2 installation as I was unable to get the Docker Desktop (Windows) to accept a daemon.json configuration to allow access to an external Port (0.0.0.0:2375) in my home network.

In the end I created a rough all-access.env file initially... which I then modified with some assistance from Github Copilot (which btw brought up some issues (e.g POST=1 will allow all non-GET/non-POST verbs) which might bear looking into)

all-access.env:

# Socket HAProxy will connect to (unix socket is recommended)
# SOCKET_PATH=unix@/var/run/docker.sock

# Where HAProxy will listen. 0.0.0.0:2375 exposes the proxy on all interfaces (dangerous).
# BIND_CONFIG=0.0.0.0:2375

# Logging
LOG_LEVEL=info

# Allow non-GET methods (POST/PUT/DELETE/etc)
POST=1

# Allow all endpoint groups
ALLOW_RESTARTS=1
ALLOW_START=1
ALLOW_STOP=1
AUTH=1
BUILD=1
COMMIT=1
CONFIGS=1
CONTAINERS=1
DISTRIBUTION=1
EVENTS=1
EXEC=1
GRPC=1
IMAGES=1
INFO=1
NETWORKS=1
NODES=1
PING=1
PLUGINS=1
SECRETS=1
SERVICES=1
SESSION=1
SWARM=1
SYSTEM=1
TASKS=1
VERSION=1
VOLUMES=1