Add curl dependency for consul registration.

[axeon]

When deploy a UI project with nginx:alpine image, it often use curl to register on consul.
if the nginx:alpine image support curl, can save lot of times to execute "apk add curl".
thanks very much!

[thresheek]

Hello @axeon and thank you for your suggestion.

What kind of URL is being hit on consul registration? Is that plain http or https?

I mean, we probably need to add ca-certificates to the image as well if it's https.

[axeon]

3ks!
HTTP is used in most cases.

[thresheek]

So https can also be hit, right? So I assume we would need CAs there too. I'll take a look on how that would bloat the images and report back.

[axeon]

support http may be in advance.