fix(scripts): update launcher to support podman with modern compose syntax

Updated container execution path to:
- Detect and prefer podman over docker (modern container runtime)
- Use modern 'docker compose' and 'podman compose' syntax (without hyphen)
- Properly handle both podman and docker as fallback options
- Display which container runtime is being used in output

Key improvements:
- Container runtime detection (prefer podman, fallback to docker)
- Uses 'podman compose' or 'docker compose' based on available runtime
- Updated status messages to show container runtime information
- Renamed internal references from Docker-specific to generic "container"

Testing results:
✅ Podman is properly detected and used (podman compose works)
✅ Container image building with podman compose --no-cache succeeds
✅ Native execution path unchanged and still fully functional
✅ Both execution modes work correctly with proper pre-flight checks

The launcher now correctly uses:
- Modern compose syntax: 'podman compose' (not 'podman-compose')
- Proper container runtime auto-detection with podman preference
- Fallback to docker if podman not available

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

scripts/run-flash-swap-bot.sh

@@ -119,42 +119,47 @@ echo "║                                                                    ║
 echo "╚════════════════════════════════════════════════════════════════════╝"
 echo ""
 
-# Handle Docker execution path
+# Handle container execution path (supports both Docker and Podman)
 if [ "$USE_DOCKER" = true ]; then
-    echo -e "${BLUE}[1/3] Checking Docker and docker-compose...${NC}"
+    # Detect container runtime (prefer podman, fallback to docker)
+    CONTAINER_RUNTIME=""
+    COMPOSE_CMD=""
 
-    if ! command -v docker &> /dev/null; then
-        echo -e "${RED}❌ Docker not found. Install Docker to use --docker flag${NC}"
+    if command -v podman &> /dev/null; then
+        CONTAINER_RUNTIME="podman"
+        COMPOSE_CMD="podman compose"
+    elif command -v docker &> /dev/null; then
+        CONTAINER_RUNTIME="docker"
+        COMPOSE_CMD="docker compose"
+    else
+        echo -e "${RED}❌ Neither podman nor docker found. Install one to use --docker flag${NC}"
         exit 1
     fi
 
-    if ! command -v docker-compose &> /dev/null; then
-        echo -e "${RED}❌ docker-compose not found. Install docker-compose to use --docker flag${NC}"
-        exit 1
-    fi
-    echo -e "${GREEN}✅ Docker and docker-compose available${NC}"
+    echo -e "${BLUE}[1/3] Checking container runtime: $CONTAINER_RUNTIME...${NC}"
+    echo -e "${GREEN}✅ Container runtime available: $CONTAINER_RUNTIME${NC}"
     echo ""
 
-    # Setup environment file for Docker
-    echo -e "${BLUE}[2/3] Setting up Docker environment...${NC}"
+    # Setup environment file for container
+    echo -e "${BLUE}[2/3] Setting up container environment...${NC}"
     cat > "$PROJECT_ROOT/.env.docker" << EOF
 ARBITRUM_RPC_ENDPOINT=$RPC_URL
 LOG_LEVEL=debug
 EOF
-    echo -e "${GREEN}✅ Docker environment configured${NC}"
+    echo -e "${GREEN}✅ Container environment configured${NC}"
     echo ""
 
-    # Build and run with docker-compose
-    echo -e "${BLUE}[3/3] Building Docker image and starting container...${NC}"
+    # Build and run with compose
+    echo -e "${BLUE}[3/3] Building container image and starting container...${NC}"
     cd "$PROJECT_ROOT"
 
-    echo "Building Docker image..."
-    docker-compose build --no-cache
+    echo "Building container image with $COMPOSE_CMD..."
+    $COMPOSE_CMD build --no-cache
 
     if [ $? -eq 0 ]; then
-        echo -e "${GREEN}✅ Docker image built successfully${NC}"
+        echo -e "${GREEN}✅ Container image built successfully${NC}"
     else
-        echo -e "${RED}❌ Docker build failed${NC}"
+        echo -e "${RED}❌ Container build failed${NC}"
         exit 1
     fi
     echo ""
@@ -163,24 +168,25 @@ EOF
     echo ""
 
     echo "╔════════════════════════════════════════════════════════════════════╗"
-    echo "║         🐳 STARTING FLASH SWAP BOT IN DOCKER CONTAINER            ║"
+    echo "║         🐳 STARTING FLASH SWAP BOT IN CONTAINER                   ║"
     echo "╠════════════════════════════════════════════════════════════════════╣"
     echo "║                                                                    ║"
-    echo "║ Container Name: mev-bot-production                                ║"
-    echo "║ RPC Endpoint:   $RPC_URL"
-    echo "║ Status:         Starting...                                       ║"
+    echo "║ Container Runtime: $CONTAINER_RUNTIME                                 ║"
+    echo "║ Container Name:    mev-bot-production                             ║"
+    echo "║ RPC Endpoint:      $RPC_URL"
+    echo "║ Status:            Starting...                                    ║"
     echo "║                                                                    ║"
     echo "║ Press Ctrl+C to stop container gracefully                         ║"
     echo "║                                                                    ║"
     echo "╚════════════════════════════════════════════════════════════════════╝"
     echo ""
 
-    # Start services with docker-compose
-    docker-compose up
+    # Start services with compose
+    $COMPOSE_CMD up
 
     # Cleanup on exit
-    echo -e "${YELLOW}Stopping Docker container...${NC}"
-    docker-compose down
+    echo -e "${YELLOW}Stopping container...${NC}"
+    $COMPOSE_CMD down
     echo -e "${GREEN}✅ Container stopped gracefully${NC}"
 
     exit 0