Update docker build to be smaller & faster (#2693)

## Description:

1. eliminate redundant curls/downloads
2. better stage organization
3. only copy required dirs & files, (removed the COPY . .) 

## Please complete the following:

- [x] I have added screenshots for all UI updates
- [x] I process any text displayed to the user through translateText()
and I've added it to the en.json file
- [x] I have added relevant tests to the test directory
- [x] I confirm I have thoroughly tested these changes and take full
responsibility for any bugs introduced

## Please put your Discord username so you can be contacted if a bug or
regression is found:

evan

.dockerignore

@@ -9,7 +9,8 @@ LICENSE
 .vscode
 Makefile
 helm-charts
-.env
+.env*
 .editorconfig
 .idea
 coverage*
+tests/