wip: ensure env vars have guards in entrypoint

Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>

Author: mefellows

pact_broker/entrypoint.sh

@@ -3,8 +3,9 @@
 # Send a lightweight, anonymous analytics ping (version + platform) to help us
 # understand adoption of this image. Opt out with PACT_DO_NOT_TRACK or
 # SCARF_NO_ANALYTICS. See https://docs.pact.io/telemetry for details.
-if [ -z "${PACT_DO_NOT_TRACK}" ] && [ -z "${SCARF_NO_ANALYTICS}" ]; then
-  wget -q -T 2 -O /dev/null "https://d.pactflow.io/pact-broker-docker/${PACT_BROKER_DOCKER_VERSION}/${PACT_BROKER_DOCKER_PLATFORM}" >/dev/null 2>&1 &
+if [ -z "${PACT_DO_NOT_TRACK:-}" ] && [ -z "${SCARF_NO_ANALYTICS:-}" ] \
+  && [ -n "${PACT_BROKER_DOCKER_VERSION:-}" ] && [ -n "${PACT_BROKER_DOCKER_PLATFORM:-}" ]; then
+  wget -q -T 2 -t 1 -O /dev/null "https://d.pactflow.io/pact-broker-docker/${PACT_BROKER_DOCKER_VERSION}/${PACT_BROKER_DOCKER_PLATFORM}" >/dev/null 2>&1 &
 fi
 
 if [ "${PACT_BROKER_DATABASE_CLEAN_ENABLED}" = "true" ]; then