Fix pip deps: add constraints + ffmpeg

Dockerfile

@@ -2,8 +2,13 @@ FROM python:3.11-slim
 
 WORKDIR /app
 
-COPY requirements.txt .
-RUN pip install --no-cache-dir -r requirements.txt
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    ffmpeg \
+    && rm -rf /var/lib/apt/lists/*
+
+COPY requirements.txt constraints.txt .
+RUN python -m pip install --upgrade pip \
+    && pip install --no-cache-dir -r requirements.txt -c constraints.txt
 
 COPY . .
 

constraints.txt

@@ -0,0 +1,8 @@
+# Pinned versions and constraints to resolve dependency conflicts
+# Ensure torch doesn't upgrade to 2.10 which requires triton==3.6.0
+torch==2.3.1
+# Whisper requires triton < 3
+triton<3
+# Explicit pins for whisper libs used by the project
+openai-whisper==20231117
+whisper-timestamped==1.15.4