[Exchange Oracle] Mount workdir for tests instead of copying it

Author: Bobronium

packages/examples/cvat/exchange-oracle/docker-compose.test.yml

@@ -83,6 +83,8 @@ services:
     networks:
       - test-network
     tty: true
+    volumes:
+      - .:/app
 
 networks:
   test-network:

packages/examples/cvat/exchange-oracle/dockerfiles/test.Dockerfile

@@ -11,6 +11,4 @@ COPY pyproject.toml poetry.lock ./
 RUN poetry config virtualenvs.create false \
     && poetry install --no-interaction --no-ansi --no-root
 
-COPY . .
-
 CMD ["pytest", "-W", "ignore::DeprecationWarning"]