Remove xvfb dependency

Dockerfile

@@ -19,7 +19,7 @@ WORKDIR /usr/src/app
 
 # Install packages depending on ENV arg from docker-compose
 ARG BASE_PACKAGES="gcc libpq-dev libjpeg62-turbo-dev libsqlite3-0 zlib1g-dev"
-ARG DEV_PACKAGES="firefox-esr xvfb"
+ARG DEV_PACKAGES="firefox-esr"
 RUN if [ "$IS_PROD" = "true" ]; then \
         PACKAGES_TO_INSTALL="$BASE_PACKAGES"; \
     else \

OpenOversight/tests/conftest.py

@@ -20,7 +20,6 @@
 from selenium.webdriver.firefox.webdriver import WebDriver as Firefox
 from sqlalchemy.orm import scoped_session, sessionmaker
 from webdriver_manager.firefox import GeckoDriverManager
-from xvfbwrapper import Xvfb
 
 from OpenOversight.app import create_app
 from OpenOversight.app.models.database import (
@@ -901,12 +900,10 @@ def server(app, server_port):
 
 @pytest.fixture(scope="session")
 def browser(app, server):
-    # start headless webdriver
-    vdisplay = Xvfb()
-    vdisplay.start()
-
     options = FirefoxOptions()
-    options.headless = True
+    options.add_argument("--headless")
+    options.add_argument("--width=1024")
+    options.add_argument("--height=768")
 
     service = FirefoxService(
         executable_path=GeckoDriverManager().install(), log_path="/tmp/geckodriver.log"
@@ -917,4 +914,3 @@ def browser(app, server):
 
     # shutdown headless webdriver
     driver.quit()
-    vdisplay.stop()

pyproject.toml

@@ -52,7 +52,6 @@ selenium = "4.17.2"
 sphinx = "7.0.1"
 sphinx-autobuild = "2021.3.14"
 webdriver-manager = "3.8.6"
-xvfbwrapper = "0.2.9"
 
 [build-system]
 requires = ["poetry-core"]