Catalog memcached binary

[witchcraze]

What would you like to be added:

An additional file classifier which finds memcached binary.

Why is this needed:

memcached is widely used.

pullCount : 1B+
starCount : 2.0K+
from https://hub.docker.com/_/memcached

memcached will be installed without a package manger in container env with official image.
We want to be able to catalog this.

$ syft -q memcached:1.6 | grep mem
$
$ docker run -it --rm memcached:1.6 memcached --version
memcached 1.6.18

Additional context:

cpe:2.3:a:memcached:memcached:*:*:*:*:*:*:*:* is used in NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-10931

---

DOCKER OFFICIAL IMAGE : memcached:1.6

$ which memcached
/usr/local/bin/memcached

$ memcached --version
memcached 1.6.18

$ strings memcached | grep '1\.6\.18'
memcached 1.6.18
memcached 1.6.18
VERSION 1.6.18

DOCKER OFFICIAL IMAGE : memcached:1.6-alpine

$ which memcached
/usr/local/bin/memcached

$ memcached --version
memcached 1.6.18

$ strings /usr/local/bin/memcached | grep '1\.6\.18'
memcached 1.6.18
memcached 1.6.18
VERSION 1.6.18

Ubuntu 22.04 + OS Package (This will be shown as package)

# which memcached
/usr/bin/memcached

# memcached --version
memcached 1.6.14

# strings /usr/bin/memcached | grep '1\.6\.14'
memcached 1.6.14
memcached 1.6.14
VERSION 1.6.14

RHEL8 + OS Package (This will be shown as package)

# which memcached
/usr/bin/memcached

# memcached --version
memcached 1.5.22

# strings /usr/bin/memcached | grep '1\.5\.22'
VERSION 1.5.22
memcached 1.5.22
memcached 1.5.22
memcached-1.5.22-2.el8.x86_64.debug

[kzantow]

Thanks @witchcraze -- added this to the backlog and of course, PRs are welcome!