fix(docker): install geoip2 in Docker image

geoip=True raised ImportError inside the container because geoip2
was not installed. Added [geoip] extra to pip install.

Dockerfile

@@ -20,7 +20,7 @@ WORKDIR /app
 # Python wrapper
 COPY pyproject.toml README.md LICENSE BINARY-LICENSE.md CHANGELOG.md ./
 COPY cloakbrowser/ cloakbrowser/
-RUN pip install --no-cache-dir ".[serve]"
+RUN pip install --no-cache-dir ".[serve,geoip]"
 
 # JS wrapper
 COPY js/ js/