Add : Opentsdb image Dockerfile with configs and pipeline

[arunesh-j]

Summary

• Add Docker image for OpenTSDB (built on Alpine 3.23 with HBase 1.4.4, OpenTSDB 2.3.1, Java 8, and gnuplot).
• Add GitHub Actions pipeline (image-deployment.yaml) to build and push images to Docker Hub on tag-based releases.
• Add README for the OpenTSDB image.

Image Details

The images/opentsdb/ directory contains a Dockerfile that packages:

• OpenTSDB 2.3.1 — scalable time-series database
• HBase 1.4.4 — standalone storage backend
• Java 8 — required runtime
• gnuplot 5.2.4 — graph rendering
• Tini 0.18.0 — init system for graceful shutdowns

Exposed ports: 4242 (OpenTSDB API), 16010 (HBase Master UI), 16070 (HBase RegionServer UI)

Pipeline

The image-deployment.yaml workflow builds and pushes Docker images based on the tag name.

Tag Format

<image-name>-image-v<version>

Example

git tag opentsdb-image-v0.0.1
git push origin opentsdb-image-v0.0.1

This builds images/opentsdb/Dockerfile and pushes:

• zopdev/opentsdb:v0.0.1
• zopdev/opentsdb:latest

Pipeline Flow

Tag Push (e.g. opentsdb-image-v0.0.1)
  │
  ▼
Trigger: matches pattern *-image-v*
  │
  ▼
Step 1: Checkout repository
  │
  ▼
Step 2: Extract image name and version from tag
         opentsdb-image-v0.0.1
         ├── IMAGE_NAME   = opentsdb
         └── IMAGE_VERSION = v0.0.1
  │
  ▼
Step 3: Verify images/opentsdb/Dockerfile exists
         ├── Found     → continue
         └── Not found → fail with error
  │
  ▼
Step 4: Log in to Docker Hub
         (uses secrets.DOCKER_HUB_PAT)
  │
  ▼
Step 5: Build and push Docker image
         ├── Context:    images/
         ├── Dockerfile: images/opentsdb/Dockerfile
         └── Tags:
              ├── zopdev/opentsdb:v0.0.1
              └── zopdev/opentsdb:latest

Adding New Images

For any new image added under images/ in the future, the same pipeline works without any changes — just use the matching tag.

# Example: future grafana image
git tag grafana-image-v1.0.0
git push origin grafana-image-v1.0.0
# → builds images/grafana/Dockerfile
# → pushes zopdev/grafana:v1.0.0 and zopdev/grafana:latest

Local Testings

Test Plan

• Verify pipeline triggers on tag push matching *-image-v*
• Verify image name and version are correctly extracted from the tag
• Verify Docker image builds successfully from images/opentsdb/Dockerfile
• Verify image is pushed to Docker Hub as zopdev/opentsdb:<version>