Remove build fixture from tests to see if image is built in CI

tests/conftest.py

@@ -2,24 +2,14 @@
 import os
 from contextlib import contextmanager
 from logging import info
-from pathlib import Path
 
-import pytest
 from plumbum import local
 from plumbum.cmd import docker
 
 DOCKER_REPO = os.environ.get("DOCKER_REPO", "docker-socket-proxy")
 IMAGE_NAME = f"{DOCKER_REPO}:local"
 
 
-@pytest.fixture(autouse=True, scope="session")
-def docker_image():
-    """Build local docker image once before starting test suite."""
-    info(f"Building {IMAGE_NAME}...")
-    docker("build", "-t", IMAGE_NAME, Path(__file__).parent.parent)
-    return IMAGE_NAME
-
-
 @contextmanager
 def proxy(**env_vars):
     """A context manager that starts the proxy with the specified env.