feat: add Docker container management functionality

- Implement DockerHandler to handle API requests for listing Docker containers.
- Create DockerService to interact with Docker API and retrieve container information.
- Add routes for Docker container management in the API.
- Introduce frontend API integration for Docker container listing.
- Enhance ProxyHostForm to allow quick selection of Docker containers.
- Update Docker-related tests to ensure functionality and error handling.
- Modify Docker Compose files to enable Docker socket access for local and remote environments.
- Add TypeScript configurations for improved build processes.

backend/internal/api/handlers/docker_handler.go

@@ -0,0 +1,31 @@
+package handlers
+
+import (
+	"net/http"
+
+	"github.com/Wikid82/CaddyProxyManagerPlus/backend/internal/services"
+	"github.com/gin-gonic/gin"
+)
+
+type DockerHandler struct {
+	dockerService *services.DockerService
+}
+
+func NewDockerHandler(dockerService *services.DockerService) *DockerHandler {
+	return &DockerHandler{dockerService: dockerService}
+}
+
+func (h *DockerHandler) RegisterRoutes(r *gin.RouterGroup) {
+	r.GET("/docker/containers", h.ListContainers)
+}
+
+func (h *DockerHandler) ListContainers(c *gin.Context) {
+	host := c.Query("host")
+	containers, err := h.dockerService.ListContainers(c.Request.Context(), host)
+	if err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": "Failed to list containers: " + err.Error()})
+		return
+	}
+
+	c.JSON(http.StatusOK, containers)
+}