feat(docker): Add multi-stage Dockerfile for Go development environment

[iplaylf2]

Summary by CodeRabbit

• New Features
  • A new Go development environment with complete pre-configured tooling is now available.
  • The Go SDK version is customizable through build arguments to support different project requirements (default: 1.25.4).
  • Go tools and binaries are pre-installed and automatically added to the system PATH for seamless developer access.

Quick Notes

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Walkthrough

Introduces a new multi-stage Dockerfile for building a Go development environment. Stage 1 downloads a Go tarball from go.dev using a configurable SDK_VERSION (default 1.25.4), and Stage 2 extracts it into a configurable installation root (default /usr/local) with PATH updated to include the Go binaries.

Changes

Cohort / File(s)	Summary
Go Dockerfile images/golang/Dockerfile	New multi-stage Dockerfile that downloads Go binary from go.dev in builder stage and extracts it into final image with configurable SDK_VERSION and INSTALL_ROOT arguments

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

• Verify that the default SDK_VERSION (1.25.4) is appropriate and up-to-date
• Confirm the Go tarball download URL construction works correctly for the specified version
• Validate that the bind mount extraction logic properly installs Go at the target INSTALL_ROOT
• Ensure PATH is correctly configured to expose Go binaries in the final image

Possibly related PRs

• chore(ci): add GitHub Actions and Docker configuration #1 — Uses similar multi-stage Docker build pattern with builder stage and artifact extraction into final image.

Pre-merge checks and finishing touches

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Description check	⚠️ Warning	The PR description is a template placeholder without actual content describing the changes introduced.	Replace the template with a meaningful description of the Go Dockerfile, including its purpose, multi-stage build approach, and how it configures the Go environment.

✨ Finishing touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch feat/add-golang-image

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[coderabbitai]

Actionable comments posted: 3

📜 Review details

Configuration used: Path: .coderabbit.yaml

Review profile: ASSERTIVE

Plan: Pro

📥 Commits

Reviewing files that changed from the base of the PR and between 2c73519 and aa4403d.

📒 Files selected for processing (1)

• images/golang/Dockerfile (1 hunks)

🧰 Additional context used

🪛 Checkov (3.2.334)

images/golang/Dockerfile

[low] 6-6: Ensure that COPY is used instead of ADD in Dockerfiles

(CKV_DOCKER_4)

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[low] 1-1: Ensure the base image uses a non latest version tag

(CKV_DOCKER_7)

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[low] 1-15: Ensure that HEALTHCHECK instructions have been added to container images

(CKV_DOCKER_2)

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[low] 1-15: Ensure that a user for the container has been created

(CKV_DOCKER_3)

🪛 Hadolint (2.14.0)

images/golang/Dockerfile

[warning] 1-1: Using latest is prone to errors if the image will ever update. Pin the version explicitly to a release tag

(DL3007)

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[warning] 9-9: Using latest is prone to errors if the image will ever update. Pin the version explicitly to a release tag

(DL3007)

🔇 Additional comments (1)

images/golang/Dockerfile (1)

6-6: ADD for remote URLs is the correct choice here (not an issue).

Checkov recommends using COPY instead of ADD, but COPY cannot download remote files. Since you're fetching from an external URL (https://go.dev/dl/go${SDK_VERSION}.linux-amd64.tar.gz), ADD is the appropriate choice. No changes needed.