Fix devcontainer setup for local Saleor development

[witoszekdev]

This PR fixes devcontainer setup to allow working with local Saleor instance by making localhost resolve to host machine IP address (this is done by docker when building image, it adds a line to /etc/hosts).

It also changes local DynamoDB to run at random port instead of 8000, which is default Saleor Core port.

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Latest commit: 5b4cb85

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Project	Deployment	Preview	Comments	Updated (UTC)
saleor-app-avatax	✅ Ready	Preview	Comment	Aug 14, 2025 5:21pm
saleor-app-cms	✅ Ready	Preview	Comment	Aug 14, 2025 5:21pm
saleor-app-klaviyo	✅ Ready	Preview	Comment	Aug 14, 2025 5:21pm
saleor-app-payment-np-atobarai	✅ Ready	Preview	Comment	Aug 14, 2025 5:21pm
saleor-app-payment-stripe	✅ Ready	Preview	Comment	Aug 14, 2025 5:21pm
saleor-app-products-feed	✅ Ready	Preview	Comment	Aug 14, 2025 5:21pm
saleor-app-search	✅ Ready	Preview	Comment	Aug 14, 2025 5:21pm
saleor-app-segment	✅ Ready	Preview	Comment	Aug 14, 2025 5:21pm
saleor-app-smtp	✅ Ready	Preview	Comment	Aug 14, 2025 5:21pm

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 34.16%. Comparing base (46a8cb6) to head (5b4cb85).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2064   +/-   ##
=======================================
  Coverage   34.16%   34.16%           
=======================================
  Files         915      915           
  Lines       58824    58824           
  Branches     2737     2738    +1     
=======================================
  Hits        20099    20099           
  Misses      38356    38356           
  Partials      369      369           

Flag	Coverage Δ
avatax	56.20% <ø> (ø)
cms	15.83% <ø> (ø)
domain	100.00% <ø> (ø)
errors	91.66% <ø> (ø)
logger	28.81% <ø> (ø)
np-atobarai	71.75% <ø> (ø)
products-feed	3.87% <ø> (ø)
search	21.52% <ø> (ø)
segment	30.61% <ø> (ø)
shared	32.46% <ø> (ø)
smtp	28.96% <ø> (ø)
stripe	70.29% <ø> (ø)
webhook-utils	11.02% <ø> (ø)

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[kzuraw]

If we change that I think we should also change scripts to setup dynamodb - currently they are requiring localhost:8000 - maybe we should globally change that to e.g 6667 or something similar?

[witoszekdev]

Hmm good idea, I'll use a single port, so that it doesn't conflict with Saleor + works with our scripts

[witoszekdev]

don't have much time to do this properly like Krzysiek requested, so will keep this as draft until then ;)