Update Dockerfile to use multi-stages to reduce build time and image size

[sanG-github]

Why

As we have already done researching the usage and already applied changes to our Dockerfile to compare the pros/cons, please take a look at this comparison file for more detailed.

There are two proposed works (POC) that you can take a look at as a reference.

• Our nimble-survey
• POC applies changes on the Dockerfile from our template

Here is the visualization of the changes in the multi-stage diagram, which shows the parallel steps that can be made to reduce build time, and some copy steps to reduce the image size, we keep only the needed dependencies for the next steps 💡

✅ Acceptance Criteria:

• multi-state building 👍 -> is about improving the build-time and image size 🤩
• layer caching to GitHub action 👍 -> reduce CI/CD time
• eliminating unused dependencies
• verifying docker image (mainly about compiling assets)

Who Benefits?

Client projects with reduced image size and build time, less costs 🚀