docs: add Docker Hub usage documentation

Author: joshrotenberg

README.md

@@ -83,19 +83,61 @@ cargo build --release --features enterprise-only --bin redis-enterprise
 cargo build --release --bin redisctl
 ```
 
-### Using Docker (for Enterprise testing)
+### Using Docker Hub Image
+
+The official Docker images are available on Docker Hub at [joshrotenberg/redisctl](https://hub.docker.com/r/joshrotenberg/redisctl):
+
+#### Available Tags
+- `latest` - Latest stable release
+- `v0.1.0`, `v0.2.0`, etc. - Specific version tags
+- `main` - Latest development build from main branch
+
 ```bash
-# Start Redis Enterprise cluster
-make docker-up
+# Pull the latest image
+docker pull joshrotenberg/redisctl:latest
+
+# Or pull a specific version
+docker pull joshrotenberg/redisctl:v0.1.0
+
+# Run a command directly
+docker run --rm joshrotenberg/redisctl:latest --help
+
+# Use with environment variables for Redis Cloud
+docker run --rm \
+  -e REDIS_CLOUD_API_KEY="your-key" \
+  -e REDIS_CLOUD_API_SECRET="your-secret" \
+  joshrotenberg/redisctl:latest cloud subscription list
+
+# Use with environment variables for Redis Enterprise
+docker run --rm \
+  -e REDIS_ENTERPRISE_URL="https://your-cluster:9443" \
+  -e REDIS_ENTERPRISE_USER="[email protected]" \
+  -e REDIS_ENTERPRISE_PASSWORD="your-password" \
+  -e REDIS_ENTERPRISE_INSECURE="true" \
+  joshrotenberg/redisctl:latest enterprise cluster info
+
+# Run interactively with a shell
+docker run -it --rm \
+  -e REDIS_ENTERPRISE_URL="https://your-cluster:9443" \
+  -e REDIS_ENTERPRISE_USER="[email protected]" \
+  -e REDIS_ENTERPRISE_PASSWORD="your-password" \
+  --entrypoint /bin/sh \
+  joshrotenberg/redisctl:latest
+```
 
-# Access the CLI
-make docker-cli
+### Local Development with Docker Compose
+```bash
+# Start Redis Enterprise cluster with test environment
+docker compose up -d
 
-# Run tests
-make docker-test
+# Watch logs
+docker compose logs -f
+
+# Run CLI commands against test cluster
+docker compose exec enterprise bash
 
 # Clean up
-make docker-down
+docker compose down -v
 ```
 
 ## Quick Start