fix: set pipefail and redirect stderr to stdout in Supervisor Envoy config

Author: thebengeu

docker/all-in-one/etc/supervisor/services/envoy.conf

@@ -1,7 +1,7 @@
 [program:envoy]
 # Workaround using `tee` to get `/dev/stdout` access logging to work, see:
 # https://github.com/envoyproxy/envoy/issues/8297#issuecomment-620659781
-command=sh -c '/opt/envoy --config-path /etc/envoy/envoy.yaml | tee'
+command=bash -c 'set -o pipefail; /opt/envoy --config-path /etc/envoy/envoy.yaml 2>&1 | tee'
 user=envoy
 autorestart=false
 autostart=false