Support start redis received signal

[drivebyer]

#26

➜  ~ docker ps
CONTAINER ID   IMAGE                           COMMAND                   CREATED         STATUS         PORTS      NAMES
8d83f21e8e1d   quay.io/opstree/redis:v7.0.12   "/usr/bin/entrypoint…"   8 seconds ago   Up 7 seconds   6379/tcp   cranky_clarke
➜  ~ docker kill -s SIGTERM cranky_clarke
cranky_clarke

redis log:

2023-10-07 22:41:46 Redis is running without password which is not recommended
2023-10-07 22:41:46 Setting up redis in standalone mode
2023-10-07 22:41:46 Running without persistence mode
2023-10-07 22:41:46 Running without TLS mode
2023-10-07 22:41:46 ACL_MODE is not true, skipping ACL file modification
2023-10-07 22:41:46 Starting redis service in standalone mode.....
2023-10-07 22:41:46 1:C 07 Oct 2023 14:41:46.166 * oO0OoO0OoO0Oo Redis is starting oO0OoO0OoO0Oo
2023-10-07 22:41:46 1:C 07 Oct 2023 14:41:46.166 * Redis version=7.2.1, bits=64, commit=00000000, modified=0, pid=1, just started
2023-10-07 22:41:46 1:C 07 Oct 2023 14:41:46.166 * Configuration loaded
2023-10-07 22:41:46 1:M 07 Oct 2023 14:41:46.166 * monotonic clock: POSIX clock_gettime
2023-10-07 22:41:46 1:M 07 Oct 2023 14:41:46.167 # Failed to write PID file: Permission denied
2023-10-07 22:41:46 1:M 07 Oct 2023 14:41:46.167 * Running mode=standalone, port=6379.
2023-10-07 22:41:46 1:M 07 Oct 2023 14:41:46.167 * Server initialized
2023-10-07 22:41:46 1:M 07 Oct 2023 14:41:46.167 * Ready to accept connections tcp
2023-10-07 22:42:09 1:signal-handler (1696689729) Received SIGTERM scheduling shutdown...
2023-10-07 22:42:09 1:M 07 Oct 2023 14:42:09.419 * User requested shutdown...
2023-10-07 22:42:09 1:M 07 Oct 2023 14:42:09.419 * Saving the final RDB snapshot before exiting.
2023-10-07 22:42:09 1:M 07 Oct 2023 14:42:09.424 * DB saved on disk
2023-10-07 22:42:09 1:M 07 Oct 2023 14:42:09.424 * Removing the pid file.
2023-10-07 22:42:09 1:M 07 Oct 2023 14:42:09.424 # Redis is now ready to exit, bye bye...

[shubham-cmyk]

LGTM