Docker compose file version line obsolete issue fix

[kchandan]

Related Issue:

New Behavior

Docker has made the version line obsolete. When following the documentation step and doing docker compose is throwing error.

:~/netbox-docker$ docker compose pull
WARN[0000] ~/netbox-docker/docker-compose.yml: `version` is obsolete
WARN[0000] !/netbox-docker/docker-compose.override.yml: `version` is obsolete

Contrast to Current Behavior

Once this line removal the docker compose pull works well. Updated the readme as well.

sudo docker compose pull
[+] Pulling 26/26
 ✔ redis-cache Skipped - Image is already being pulled by redis                                                                                                                                             0.0s
 ✔ netbox-worker Skipped - Image is already being pulled by netbox                                                                                                                                          0.0s
 ✔ netbox-housekeeping Skipped - Image is already being pulled by netbox                                                                                                                                    0.0s
 ✔ netbox 14 layers [⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿]      0B/0B      Pulled                                                                                                                                                11.9s
   ✔ 6360b3717211 Pull complete                                                                                                                                                                             0.9s
   ✔ 060f062dc86e Pull complete                                                                                                                                                                             1.3s
   ✔ 8853789ea8ce Pull complete                                                                                                                                                                             2.0s
   ✔ 9240c968ff32 Pull complete                                                                                                                                                                             2.0s
   ✔ dc96838c65a9 Pull complete                                                                                                                                                                             1.7s
   ✔ b05dedc9a602 Pull complete                                                                                                                                                                             2.3s
   ✔ 79a476309480 Pull complete                                                                                                                                                                             2.6s
   ✔ c3a38d8d724d Pull complete                                                                                                                                                                             2.3s
   ✔ dec94c5855b3 Pull complete                                                                                                                                                                             2.6s
   ✔ 67cda12f9041 Pull complete                                                                                                                                                                             2.6s
   ✔ 8a4649e22240 Pull complete                                                                                                                                                                             2.8s
   ✔ d6f9dc02592c Pull complete                                                                                                                                                                             2.8s
   ✔ 4f4fb700ef54 Pull complete                                                                                                                                                                             2.9s
   ✔ d0e38cc0d313 Pull complete                                                                                                                                                                             3.3s
 ✔ redis 7 layers [⣿⣿⣿⣿⣿⣿⣿]      0B/0B      Pulled                                                                                                                                                          5.2s
   ✔ 4abcf2066143 Pull complete                                                                                                                                                                             3.2s
   ✔ 5c3180d10209 Pull complete                                                                                                                                                                             3.2s
   ✔ f76326fd8e6b Pull complete                                                                                                                                                                             3.5s
   ✔ 034c076ba1e7 Pull complete                                                                                                                                                                             3.5s
   ✔ dffcad17539b Pull complete                                                                                                                                                                             3.9s
   ✔ 5913474e0f39 Pull complete                                                                                                                                                                             3.8s
   ✔ cc6fccbbefa3 Pull complete    

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Discussion: Benefits and Drawbacks

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Changes to the Wiki

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Proposed Release Note Entry

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