copy from official addon

grafana/rootfs/etc/s6-overlay/s6-rc.d/memcached/finish

@@ -0,0 +1,27 @@
+#!/command/with-contenv bashio
+# shellcheck shell=bash
+# ==============================================================================
+# Home Assistant Community Add-on: Grafana
+# Take down the S6 supervision tree when memcached fails
+# ==============================================================================
+declare exit_code
+readonly exit_code_container=$(</run/s6-linux-init-container-results/exitcode)
+readonly exit_code_service="${1}"
+readonly exit_code_signal="${2}"
+readonly service="memcached"
+
+bashio::log.info \
+  "Service ${service} exited with code ${exit_code_service}" \
+  "(by signal ${exit_code_signal})"
+
+if [[ "${exit_code_service}" -eq 256 ]]; then
+  if [[ "${exit_code_container}" -eq 0 ]]; then
+    echo $((128 + $exit_code_signal)) > /run/s6-linux-init-container-results/exitcode
+  fi
+  [[ "${exit_code_signal}" -eq 15 ]] && exec /run/s6/basedir/bin/halt
+elif [[ "${exit_code_service}" -ne 0 ]]; then
+  if [[ "${exit_code_container}" -eq 0 ]]; then
+    echo "${exit_code_service}" > /run/s6-linux-init-container-results/exitcode
+  fi
+  exec /run/s6/basedir/bin/halt
+fi

grafana/rootfs/etc/s6-overlay/s6-rc.d/memcached/run

@@ -0,0 +1,15 @@
+#!/command/with-contenv bashio
+# shellcheck shell=bash
+# ==============================================================================
+# Home Assistant Community Add-on: Grafana
+# Runs the memcached Server
+# ==============================================================================
+declare -a options
+
+bashio::log.info 'Starting Memcached...'
+
+options+=(-l 127.0.0.1)
+options+=(-m 32)
+
+# Run Memcached
+exec s6-setuidgid memcache /usr/bin/memcached "${options[@]}"

grafana/rootfs/etc/s6-overlay/s6-rc.d/memcached/type

@@ -0,0 +1 @@
+longrun