Add Dockerfile to pre-bake Python ML dependencies into backend image

Extends odoo:19.0 with all requirements from new_project/requirements.txt
(openai, torch, sentence-transformers, faiss-cpu, etc.) so they are
baked into the image at build time — no more manual pip installs needed.

Updates docker-compose.yml to use build: . and image: encoach-backend:latest.

Made-with: Cursor

Dockerfile

@@ -0,0 +1,9 @@
+FROM odoo:19.0
+
+USER root
+
+# Install all Python dependencies required by EnCoach custom addons
+COPY new_project/requirements.txt /tmp/requirements.txt
+RUN pip install -r /tmp/requirements.txt --break-system-packages --no-warn-script-location
+
+USER odoo