fix(aio): make image-gen for GPU functional, update docs (#1895)

* readme: update quickstart

* aio(gpu): fix dreamshaper

* tests(aio): allow to run tests also against an endpoint

* docs: split content

* tests: less verbosity

---------

Co-authored-by: Dave <dave@gray101.com>

aio/gpu-8g/image-gen.yaml

@@ -1,6 +1,6 @@
 name: stablediffusion
 parameters:
-  model: huggingface://Lykon/DreamShaper/DreamShaper_8_pruned.safetensors
+  model: DreamShaper_8_pruned.safetensors
 backend: diffusers
 step: 25
 f16: true
@@ -11,6 +11,10 @@ diffusers:
   enable_parameters: "negative_prompt,num_inference_steps"
   scheduler_type: "k_dpmpp_2m"
 
+download_files:
+- filename: DreamShaper_8_pruned.safetensors
+  uri: huggingface://Lykon/DreamShaper/DreamShaper_8_pruned.safetensors
+
 usage: |
         curl http://localhost:8080/v1/images/generations \
           -H "Content-Type: application/json" \