feat: add container registry targets to Makefile

- Add docker-tag, docker-push, docker-pull, docker-login targets
- Add registry-build and registry-push convenience targets
- Add docker-clean-registry for cleanup
- Integrate with CONTAINER_REGISTRY_URL and CONTAINER_TAG environment variables
- Support fallback to default Gitea registry URL when .env is missing
- Update status target to show registry configuration
- Add dual tagging (specific tag + latest)

Makefile

@@ -3,6 +3,7 @@
 
 .PHONY: help install install-dev clean test test-cov lint format type-check
 .PHONY: server cli demo docker-build docker-dev docker-prod docker-test
+.PHONY: docker-push docker-pull docker-tag docker-login registry-build registry-push
 .PHONY: pre-commit setup-dev deps-update deps-check security-check
 .PHONY: build package publish docs release validate-config
 
@@ -222,6 +223,60 @@ docker-build: ## Build Docker images
 	docker-compose build
 	$(call success,Docker images built)
 
+# Container Registry targets
+docker-tag: ## Tag Docker images with registry URL
+	$(call info,Tagging Docker images for registry...)
+	@if [ -f ".env" ]; then \
+		. ./.env && \
+		docker tag unitforge:latest $${CONTAINER_REGISTRY_URL}:$${CONTAINER_TAG} && \
+		docker tag unitforge:latest $${CONTAINER_REGISTRY_URL}:latest; \
+	else \
+		echo -e "$(YELLOW)$(WARNING_SYMBOL)$(NC) .env file not found. Using default values."; \
+		docker tag unitforge:latest http://gitea-http.taildb3494.ts.net/will/unitforge:latest; \
+	fi
+	$(call success,Docker images tagged for registry)
+
+docker-push: docker-tag ## Push Docker images to registry
+	$(call info,Pushing Docker images to registry...)
+	@if [ -f ".env" ]; then \
+		. ./.env && \
+		docker push $${CONTAINER_REGISTRY_URL}:$${CONTAINER_TAG} && \
+		docker push $${CONTAINER_REGISTRY_URL}:latest; \
+	else \
+		echo -e "$(YELLOW)$(WARNING_SYMBOL)$(NC) .env file not found. Using default values."; \
+		docker push http://gitea-http.taildb3494.ts.net/will/unitforge:latest; \
+	fi
+	$(call success,Docker images pushed to registry)
+
+docker-pull: ## Pull Docker images from registry
+	$(call info,Pulling Docker images from registry...)
+	@if [ -f ".env" ]; then \
+		. ./.env && \
+		docker pull $${CONTAINER_REGISTRY_URL}:$${CONTAINER_TAG}; \
+	else \
+		echo -e "$(YELLOW)$(WARNING_SYMBOL)$(NC) .env file not found. Using default values."; \
+		docker pull http://gitea-http.taildb3494.ts.net/will/unitforge:latest; \
+	fi
+	$(call success,Docker images pulled from registry)
+
+registry-build: docker-build docker-tag ## Build and tag images for registry
+	$(call success,Images built and tagged for registry)
+
+registry-push: registry-build docker-push ## Build, tag, and push images to registry
+	$(call success,Images built, tagged, and pushed to registry)
+
+docker-login: ## Login to container registry (interactive)
+	$(call info,Logging into container registry...)
+	@if [ -f ".env" ]; then \
+		. ./.env && \
+		echo "Logging into registry at: $${CONTAINER_REGISTRY_URL}"; \
+		docker login $${CONTAINER_REGISTRY_URL}; \
+	else \
+		echo -e "$(YELLOW)$(WARNING_SYMBOL)$(NC) .env file not found. Using default values."; \
+		docker login http://gitea-http.taildb3494.ts.net; \
+	fi
+	$(call success,Logged into container registry)
+
 docker-build-legacy: ## Build Docker images with legacy builder (networking issues workaround)
 	$(call info,Building Docker images with legacy builder...)
 	DOCKER_BUILDKIT=0 docker-compose build
@@ -278,6 +333,17 @@ docker-clean-legacy: ## Clean Docker containers and images
 	docker system prune -f
 	$(call success,Docker cleanup complete)
 
+docker-clean-registry: ## Remove locally cached registry images
+	$(call info,Cleaning registry images from local cache...)
+	@if [ -f ".env" ]; then \
+		. ./.env && \
+		docker rmi $${CONTAINER_REGISTRY_URL}:$${CONTAINER_TAG} 2>/dev/null || true && \
+		docker rmi $${CONTAINER_REGISTRY_URL}:latest 2>/dev/null || true; \
+	else \
+		docker rmi http://gitea-http.taildb3494.ts.net/will/unitforge:latest 2>/dev/null || true; \
+	fi
+	$(call success,Registry images cleaned from local cache)
+
 # Package and release targets
 build: clean ## Build package
 	$(call info,Building package...)
@@ -367,6 +433,20 @@ status: ## Show project status
 	else \
 		echo "  ✗ uv package manager not found - REQUIRED"; \
 	fi
+	@if command -v docker >/dev/null 2>&1; then \
+		echo "  ✓ Docker available"; \
+	else \
+		echo "  ✗ Docker not found"; \
+	fi
+	@echo ""
+	@echo -e "$(YELLOW)Container Registry:$(NC)"
+	@if [ -f ".env" ]; then \
+		. ./.env && \
+		echo "  ✓ Registry URL: $${CONTAINER_REGISTRY_URL}"; \
+		echo "  ✓ Container Tag: $${CONTAINER_TAG}"; \
+	else \
+		echo "  ⚠ .env file not found - using defaults"; \
+	fi
 	@echo ""
 	@echo -e "$(YELLOW)Project Files:$(NC)"
 	@if [ -f "pyproject.toml" ]; then echo "  ✓ pyproject.toml"; else echo "  ✗ pyproject.toml"; fi