fix: use list-form command with literal block to avoid sh syntax error

YAML folded scalar (>) preserves newlines on more-indented continuation
lines, so the shell received && on its own line which is invalid in
dash. Switched to the list form [/bin/sh, -c, |script|] so Docker
passes the script verbatim to sh -c without double-wrapping.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

docker-compose.yml

@@ -27,7 +27,7 @@ services:
     networks:
       - rag_net
     # No healthcheck — qdrant image does not ship curl/wget.
-    # Dependent services use a wait-loop via our own image which has curl.
+    # Dependent services wait via a loop in our own image (which has curl).
 
   rag-api:
     build: .
@@ -35,11 +35,15 @@ services:
     restart: unless-stopped
     depends_on:
       - qdrant
-    # Wait for Qdrant to accept HTTP before starting uvicorn
-    command: >
-      sh -c "until curl -sf http://qdrant:6333/ > /dev/null 2>&1;
-             do echo 'waiting for qdrant...'; sleep 3; done
-             && uvicorn api.main:app --host 0.0.0.0 --port 8000 --workers 2"
+    command:
+      - /bin/sh
+      - -c
+      - |
+        until curl -sf http://qdrant:6333/ > /dev/null 2>&1; do
+          echo 'waiting for qdrant...'
+          sleep 3
+        done
+        exec uvicorn api.main:app --host 0.0.0.0 --port 8000 --workers 2
     ports:
       - "8000:8000"
     environment:
@@ -72,11 +76,15 @@ services:
     build: .
     container_name: odoo18-indexer
     profiles: ["indexer"]
-    # Wait for Qdrant before indexing
-    command: >
-      sh -c "until curl -sf http://qdrant:6333/ > /dev/null 2>&1;
-             do echo 'waiting for qdrant...'; sleep 3; done
-             && python /app/indexer/indexer.py"
+    command:
+      - /bin/sh
+      - -c
+      - |
+        until curl -sf http://qdrant:6333/ > /dev/null 2>&1; do
+          echo 'waiting for qdrant...'
+          sleep 3
+        done
+        exec python /app/indexer/indexer.py
     depends_on:
       - qdrant
     volumes: