Update docker deploy docs

[codecov[bot]]

Codecov Report

Base: 73.80% // Head: 73.73% // Decreases project coverage by -0.07% :warning:

Coverage data is based on head (db712f8) compared to base (fc12d15). Patch has no changes to coverable lines.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #142 +/- ## ========================================== - Coverage 73.80% 73.73% -0.08% ========================================== Files 40 38 -2 Lines 1863 1854 -9 ========================================== - Hits 1375 1367 -8 + Misses 488 487 -1 ``` | [Impacted Files](https://codecov.io/gh/agstrike/silverstrike/pull/142?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=agstrike) | Coverage Δ | | |---|---|---| | [silverstrike/\_\_init\_\_.py](https://codecov.io/gh/agstrike/silverstrike/pull/142/diff?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=agstrike#diff-c2lsdmVyc3RyaWtlL19faW5pdF9fLnB5) | | | | [silverstrike/models/\_\_init\_\_.py](https://codecov.io/gh/agstrike/silverstrike/pull/142/diff?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=agstrike#diff-c2lsdmVyc3RyaWtlL21vZGVscy9fX2luaXRfXy5weQ==) | | | | [silverstrike/management/commands/createtestdata.py](https://codecov.io/gh/agstrike/silverstrike/pull/142/diff?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=agstrike#diff-c2lsdmVyc3RyaWtlL21hbmFnZW1lbnQvY29tbWFuZHMvY3JlYXRldGVzdGRhdGEucHk=) | `90.47% <0.00%> (+1.58%)` | :arrow_up: | Help us with your feedback. Take ten seconds to tell us [how you rate us](https://about.codecov.io/nps?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=agstrike). Have a feature suggestion? [Share it here.](https://app.codecov.io/gh/feedback/?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=agstrike)

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