[diffusers-cli] add a dockerfile for diffusers cli hf jobs

[sayakpaul]

• Adds a Dockerfile so that we can ship a (default) Docker container for the remote jobs that could run via the CLI. This will help reduce start time.
• Docker container builds: https://github.com/huggingface/diffusers/actions/runs/32443185755/job/96657797476

Used this command to launch a job that used the Docker container above:

diffusers-cli --format json run \
    --model black-forest-labs/FLUX.1-dev \
    --dtype bf16 \
    --pipeline-kwargs '{"prompt": "a red panda astronaut floating above a coral reef, cinematic lighting", 
  "num_inference_steps": 20, "guidance_scale": 3.5}' \
    --seed 0 \
    --remote --flavor a100-large --timeout 30m

Resulting job: https://huggingface.co/jobs/sayakpaul/6a87c657c81709766c80327a

Note that the job shows "canceled" rather than "completed". This is because we use .kill() here:

diffusers/src/diffusers/commands/run.py

Line 1156 in 2f7e015

sbx.kill()

I think this is misleading.

Resulting image:

[HuggingFaceDocBuilderDev]

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