Use single entrypoint for both images but detect which to run

bin/docker-server

@@ -3,13 +3,20 @@ set -e
 
 ./bin/migrate-check
 
+# if we are on the unit image run the unit entrypoint
+if [ -f /usr/local/bin/docker-entrypoint.sh ]; then
+    echo "Running unit entrypoint"
+    exec $(dirname -- "${BASH_SOURCE[0]}")/docker-server-unit
+fi
+
 # To ensure we are able to expose metrics from multiple processes, we need to
 # provide a directory for `prometheus_client` to store a shared registry.
 export PROMETHEUS_MULTIPROC_DIR=$(mktemp -d)
 trap 'rm -rf "$PROMETHEUS_MULTIPROC_DIR"' EXIT
 
 export PROMETHEUS_METRICS_EXPORT_PORT=8001
 export STATSD_PORT=${STATSD_PORT:-8125}
+echo "Running gunicorn"
 
 exec gunicorn posthog.wsgi \
     --config gunicorn.config.py \