docker build for salad and salad_app.py to setup environment

runner/docker/Dockerfile.salad

@@ -0,0 +1,9 @@
+ARG BASE_IMAGE=livepeer/ai-runner:base
+FROM ${BASE_IMAGE}
+
+RUN pip install --no-cache-dir huggingface_hub
+
+COPY ./dl_checkpoints.sh /app
+COPY ./salad_app.py /app
+
+CMD ["python", "-u", "/app/salad_app.py"]

runner/salad_app.py

@@ -0,0 +1,56 @@
+import logging
+import os
+import argparse
+from huggingface_hub import snapshot_download
+import re
+import uvicorn
+import json
+
+logger = logging.getLogger(__name__)
+
+MODELS_DIR = os.getenv("MODELS_DIR","/models")
+PIPELINE = os.getenv("PIPELINE", "")
+MODEL_ID = os.getenv("MODEL_ID", "")
+HOST = os.getenv("HOST", "::")
+PORT = os.getenv("PORT", "8000")
+
+def get_download_cmd():
+    include = []
+    exclude = []
+    with open('/app/dl_checkpoints.sh', 'r') as file:
+        lines = file.readlines()  # Reads all lines into a list
+        for line in lines:
+            if MODEL_ID in line:
+                line = line.strip()
+                include_re = re.findall("--include\s+([\*\.\s\w\"]+)(?!\s--\w+)", line)
+                exclude_re = re.findall("--exclude\s+([\*\.\s\w\"]+)(?!\s--\w+)", line)
+                if len(include_re) > 0:
+                    include = ["**/"+s.replace('"', '') for s in include_re[0].split()]
+                if len(exclude_re) > 0:
+                    exclude = ["**/"+s.replace('"', '') for s in exclude_re[0].split()]
+                return include, exclude, MODELS_DIR
+
+    #no automatic download found
+    return [], [], ""
+
+if __name__ == "__main__":
+    allow, ignore, cache_folder = get_download_cmd()
+    if len(allow) == 0 and len(ignore) == 0:
+        logger.error("no include and exclude files found")
+
+    #download the model
+    print(f"Downloading model {MODEL_ID} from huggingface")
+    snapshot_download(repo_id=MODEL_ID, cache_dir=cache_folder)
+
+    print(f"Starting ai-runner")
+    with open("/app/app/cfg/uvicorn_logging_config.json", "r") as file:
+        log_config = json.load(file)
+
+    #run the api
+    uvicorn.run(
+        "app.main:app",
+        host=HOST,
+        port=int(PORT),
+        log_config=log_config
+    )
+