fix: sanitizing agent name before pushing to docker registry (ENG-672)

[evilsocket]

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[linear]

ENG-672 CLI / Strikes: always lowercase the agent name

As per https://docs.google.com/document/d/17aHyIYkQvNZGKPPFUGPzu6KtrlD4WpMdu-9-vLyWqVo/edit?tab=t.0 :

• Can you just str.lowercase() for the user? Or throw an error earlier in some sort of linting step? This was on the push.
  • `http+docker://localhost/v1.47/images/sha256:eeeb15501b1b24b0d6dd4b9f5e6c7594ee4d5d6dd165ec644f3e85beeb76e71c/tag?tag=eb76e71c&repo=registry.dreadnode.io%2Fjoe%2Fagents%2FMorpheus_Falco&force=0: Bad Request ("invalid reference format: repository name (joe/agents/Morpheus_Falco) must be lowercase")`
  • This is in the strikes beta docs: https://dreadnode.notion.site/strikes-beta-program#1571ad120376802aa7f1e9c73f7db6f7
    • But that name triggers the same problem
    • http+docker://localhost/v1.47/images/sha256:f98eee2e0fd74570d65813b5ea1a16b8d6459158809e9e12793e505499577db0/tag?tag=99577db0&repo=r
    • egistry.dreadnode.io%2Fjoe%2Fagents%2FMy_First_Falco&force=0: Bad Request ("invalid reference format: repository name
    • (joe/agents/My_First_Falco) must be lowercase")