get wwa working with podman

Makefile

@@ -1,11 +1,20 @@
 BUILD_TARGET?=workload-app
 NAMESPACE?=workload-web-app
-CONTAINER_ENGINE?=docker
+
+# Auto-detect container engine if not specified
+CONTAINER_ENGINE?=$(shell command -v podman >/dev/null 2>&1 && echo podman || echo docker)
+
 CONTAINER_PLATFORM?=linux/amd64
 TOOLS_IMAGE?=quay.io/integreatly/workload-web-app-tools
 WORKLOAD_WEB_APP_IMAGE?= # Alternative image 
 KUBECONFIG?=${HOME}/.kube/config
-ADDITIONAL_CONTAINER_ENGINE_PARAMS?=
+
+# Podman-specific parameters for better compatibility
+ifeq ($(CONTAINER_ENGINE),podman)
+    ADDITIONAL_CONTAINER_ENGINE_PARAMS?=--userns=keep-id
+else
+    ADDITIONAL_CONTAINER_ENGINE_PARAMS?=
+endif
 
 in_container = ${CONTAINER_ENGINE} run --rm -it ${ADDITIONAL_CONTAINER_ENGINE_PARAMS} \
 	-e KUBECONFIG=/kube.config \
@@ -23,8 +32,20 @@ in_container = ${CONTAINER_ENGINE} run --rm -it ${ADDITIONAL_CONTAINER_ENGINE_PA
 test:
 	@echo "SUCCESS"
 
+.PHONY: container-engine
+container-engine:
+	@echo "Container Engine: $(CONTAINER_ENGINE)"
+	@echo "Platform: $(CONTAINER_PLATFORM)"
+	@echo "Additional Parameters: $(ADDITIONAL_CONTAINER_ENGINE_PARAMS)"
+	@$(CONTAINER_ENGINE) --version
+
+.PHONY: validate-engine
+validate-engine:
+	@command -v $(CONTAINER_ENGINE) >/dev/null 2>&1 || { echo "$(CONTAINER_ENGINE) not found. Please install $(CONTAINER_ENGINE) or use CONTAINER_ENGINE=<engine> to specify another."; exit 1; }
+	@echo "✓ $(CONTAINER_ENGINE) is available"
+
 .PHONY: image/build/tools
-image/build/tools:
+image/build/tools: validate-engine
 	${CONTAINER_ENGINE} build --platform=$(CONTAINER_PLATFORM) -t ${TOOLS_IMAGE} -f Dockerfile.tools .
 
 local/deploy: image/build/tools
@@ -33,7 +54,7 @@ local/deploy: image/build/tools
 local/undeploy: image/build/tools
 	$(call in_container,undeploy)
 
-local/build-deploy:
+local/build-deploy: validate-engine
 	${CONTAINER_ENGINE} build --platform=$(CONTAINER_PLATFORM) -t ${WORKLOAD_WEB_APP_IMAGE} .
 	${CONTAINER_ENGINE} push ${WORKLOAD_WEB_APP_IMAGE}
 	$(call in_container,deploy)

README.md

@@ -1,6 +1,26 @@
 # workload-web-app
 A test app for simulating the workload on the openshift cluster based on end-user use cases in order to monitor the downtime of component products in integreatly during an upgrade.
 
+## Container Engine Support
+
+This application supports both **Docker** and **Podman**. The Makefile automatically detects which container engine is available:
+
+- If Podman is available, it uses Podman
+- If only Docker is available, it uses Docker
+- You can override the detection by setting `CONTAINER_ENGINE=docker` or `CONTAINER_ENGINE=podman`
+
+### Check your container engine
+
+You can check which container engines are available and get setup guidance:
+
+```bash
+# Quick environment check with helpful tips
+./check-container-engine.sh
+
+# Or use the Makefile target for basic info
+make container-engine
+```
+
 ## Deploying the Application on the RHOAM cluster
 
 To deploy the app to a RHOAM cluster, you will need to:
@@ -15,7 +35,21 @@ To deploy the app to a RHOAM cluster, you will need to:
    export RHOAMI=true
    ```
 4. Then run this command to deploy the app:
-   ```make local/deploy```
+   ```bash
+   make local/deploy
+   ```
+
+### Using a specific container engine
+
+If you want to use a specific container engine, set the `CONTAINER_ENGINE` variable:
+
+```bash
+# Using Docker
+CONTAINER_ENGINE=docker make local/deploy
+
+# Using Podman
+CONTAINER_ENGINE=podman make local/deploy
+```
 
 ## Delete the app
 
@@ -28,9 +62,34 @@ Note: It might take up to 15 minutes for 3scale to fully remove the service (Pro
 
 ## Troubleshooting
 
-In case of `make: stat: Makefile: Permission denied` error try to use privileged:
+### Container Engine Issues
 
-```
-ADDITIONAL_CONTAINER_ENGINE_PARAMS="--privileged" CONTAINER_ENGINE=podman make local/deploy
-```
+1. **Check if your container engine is working:**
+   ```bash
+   make validate-engine
+   ```
+
+2. **Permission denied errors with Podman:**
+   ```bash
+   ADDITIONAL_CONTAINER_ENGINE_PARAMS="--privileged" make local/deploy
+   ```
+
+3. **SELinux issues with volume mounts:**
+   The Makefile automatically adds `:z` labels for SELinux compatibility. If you still have issues:
+   ```bash
+   ADDITIONAL_CONTAINER_ENGINE_PARAMS="--privileged --security-opt label=disable" make local/deploy
+   ```
+
+4. **Force a specific container engine:**
+   ```bash
+   # Force Docker even if Podman is available
+   CONTAINER_ENGINE=docker make local/deploy
+
+   # Force Podman even if Docker is available
+   CONTAINER_ENGINE=podman make local/deploy
+   ```
+
+### 3scale Service Issues
+
+Note: It might take up to 15 minutes for 3scale to fully remove the service (Product) hence you need to wait this long after undeploy if you want to deploy the workload-web-app again. In case the service is not fully removed yet the deployment fails with `System name has already been taken` error.
 

check-container-engine.sh

@@ -0,0 +1,63 @@
+#!/bin/bash
+
+# Container Engine Detection and Validation Script
+# This script helps users understand which container engine will be used
+
+set -e
+
+echo "🔍 Container Engine Detection Report"
+echo "=================================="
+
+# Check for Podman
+if command -v podman >/dev/null 2>&1; then
+    echo "✅ Podman found: $(podman --version)"
+    PODMAN_AVAILABLE=true
+else
+    echo "❌ Podman not found"
+    PODMAN_AVAILABLE=false
+fi
+
+# Check for Docker
+if command -v docker >/dev/null 2>&1; then
+    echo "✅ Docker found: $(docker --version)"
+    DOCKER_AVAILABLE=true
+else
+    echo "❌ Docker not found"
+    DOCKER_AVAILABLE=false
+fi
+
+echo ""
+
+# Determine which engine would be used
+if [ "$DOCKER_AVAILABLE" = true ] && [ "$PODMAN_AVAILABLE" = true ]; then
+    echo "🎯 Both container engines are available!"
+    echo "   The Makefile will automatically use: Podman (preferred)"
+    echo "   To use Docker instead: CONTAINER_ENGINE=docker make <target>"
+elif [ "$PODMAN_AVAILABLE" = true ]; then
+    echo "🎯 Only Podman is available - it will be used automatically"
+elif [ "$DOCKER_AVAILABLE" = true ]; then
+    echo "🎯 Only Docker is available - it will be used automatically"
+else
+    echo "❌ No container engine found!"
+    echo "   Please install either Docker or Podman to continue"
+    exit 1
+fi
+
+echo ""
+echo "📋 Quick Commands:"
+echo "   Check current detection: make container-engine"
+echo "   Validate your engine:    make validate-engine"
+echo "   Deploy with auto-detect: make local/deploy"
+echo "   Deploy with Docker:      CONTAINER_ENGINE=docker make local/deploy"
+echo "   Deploy with Podman:      CONTAINER_ENGINE=podman make local/deploy"
+
+if [ "$PODMAN_AVAILABLE" = true ]; then
+    echo ""
+    echo "💡 Podman Tips:"
+    echo "   - If you encounter permission issues, try:"
+    echo "     ADDITIONAL_CONTAINER_ENGINE_PARAMS=\"--privileged\" make local/deploy"
+    echo "   - For SELinux systems, volume mounts include :z labels automatically"
+fi
+
+echo ""
+echo "✅ Environment check complete!"