feat: remove RUDDERSTACK_PAT from Docker build

[kuldeep0020]

Summary

• Remove RUDDERSTACK_PAT build argument from Dockerfile and Dockerfile.optimize
• Stop baking the PAT into the profiles-mcp .env file at build time
• Remove RUDDERSTACK_PAT secret from ECR and DockerHub build args in the CI workflow

Linear Task

Build is failing

[debanjan97]

Build is failing, you need to install the new mcp without PAT requirement

[kuldeep0020]

Build is failing, you need to install the new mcp without PAT requirement

Made a release on profiles-mcp and using that here now.

[debanjan97]

Build is failing, you need to install the new mcp without PAT requirement

Made a release on profiles-mcp and using that here now.

https://github.com/rudderlabs/profiles-mcp/blob/02b2f3476479f68ff13534153e0f4b88b749c639/scripts/env_setup.py#L10
unless we remove this, build will still fail

[github-actions]

Docker Preview Images Ready

Preview Docker images have been built for this PR:

ECR (internal):

docker pull 422074288268.dkr.ecr.us-east-1.amazonaws.com/rudderstack/profiles-code-server:pr-133

DockerHub (public):

docker pull rudderstack/profiles-code-server:pr-133

Image Details:

• Tag: pr-133
• Platforms: linux/amd64, linux/arm64

Test the image:

docker run --rm -p 8080:8080 rudderstack/profiles-code-server:pr-133

Note: These preview images will be overwritten on subsequent pushes to this PR.