Add a temporary hack to upgrade gevent and greenlet in Docker

gevent is used by both uWSGI and pywb. pywb pins it to v22.10.2. However there
have been fixes for the version of Python we are using in v24.2.1. In order to
test whether the older version of gevent is responsible for hangs we are seeing
in production, update gevent in the Docker container.

Dockerfile

@@ -20,6 +20,12 @@ RUN apk add --no-cache --virtual build-deps \
   && pip install --no-cache-dir -r requirements.txt \
   && apk del build-deps
 
+# Temporarily install the latest gevent and greenlet releases. This version is
+# incompatible with pywb's stated requirements, but it nevertheless runs.
+#
+# The newer gevent release includes bugfixes for Python >= 3.11.8.
+RUN pip install --no-cache-dir gevent==24.2.1 greenlet==3.1.0
+
 COPY ./conf/nginx/nginx.conf /etc/nginx/nginx.conf
 COPY ./conf/nginx/viahtml /etc/nginx/viahtml
 COPY . .