I-36 Use pre-built frontend image instead of building Next.js app on boot

[reginaldbondoc]

Frontend changes

• New Dockerfile for building images
  • Now multi-stage
  • NODE_ENV value production pre-baked
  • POSTHOG_HOST pre-baked with value https://app.posthog.com (can be overwritten during build via build-arg)
  • POSTHOG_API_KEY will be pre-baked with "public" PostHog API key during build via build-arg. Now, self-hosted clients will already have this set in the image they pull.
  • Final production image has the optimized Next.js application, i.e. using the standalone files
  • On boot, some environment variables may override during runtime
    • NEXT_PUBLIC_POSTHOG_API_KEY - when set, will replace the pre-baked one. One application of this is for the cloud-hosted clients, where we want to use the "private" PostHot API key
    • INFISICAL_TELEMETRY_ENABLED (TELEMETRY_ENABLED in .env file setting the value of INFISICAL_TELEMETRY_ENABLED in docker-compose) - when set to false, will disable Infisical telemetry. Enabled by default.
    • Note on value of INFISICAL_TELEMETRY_ENABLED or TELEMETRY_ENABLED: Only the string false will disable telemetry. Any other value, including empty string, will enable telemetry.
  • Starts the application via node instead of next (the latter has issue with SIGTERM)
• Created separate singleton utility class Telemetry
  • Initialization of PostHog API (only when telemetry is enabled) will be done only once in this class
• Modified usages of posthog API to use the singleton Telemetry class

Compose files changes

• docker-compose.yml
  • Removed the platform qualifier as this PR includes support for building multi-platform images (see changes to GitHub Actions workflow below)
  • Removed build definition for both backend and frontend services - we should be using the images instead of building (please correct me here if I'm wrong)
  • Removed unused environment variables
• docker-compose.dev.yml
  • Removed image property as we're building on boot anyway
  • Removed unused environment variables
  • Added dependency to mongo of mongo-express

GitHub Actions workflow changes

• Improved docker-image workflow
• Separated into backend and frontend jobs. Now, frontend can build in parallel even when some backend build steps fail.
• Support for multi-platform (amd64 & arm64)
• Added test step to run the built image before actually pushing to Docker Hub (Note: the second build step does not actually build from scratch, as the layers for amd64 are cached. Only the arm64 will be built anew)

[maidul98]

Hey Egi, i am still reviewing the changes! Really good stuff

[maidul98]

Looks go to me! Ping me if the git workflow is not working as expected so we can take a look together

[maidul98]

Looks good!