Initial scaffold: backend base + docker-compose dev infra + sveltekit frontend

backend/internal/httpserver/handlers.go

@@ -0,0 +1,29 @@
+package httpserver
+
+import (
+	"encoding/json"
+	"net/http"
+
+	dockerconn "dockermanager/backend/internal/docker"
+)
+
+func handleHealthz(w http.ResponseWriter, r *http.Request) {
+	writeJSON(w, http.StatusOK, map[string]string{"status": "ok"})
+}
+
+func handleListContainers(d dockerconn.HostConnector) http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		containers, err := d.ListContainers(r.Context())
+		if err != nil {
+			writeJSON(w, http.StatusBadGateway, map[string]string{"error": err.Error()})
+			return
+		}
+		writeJSON(w, http.StatusOK, containers)
+	}
+}
+
+func writeJSON(w http.ResponseWriter, status int, body any) {
+	w.Header().Set("Content-Type", "application/json")
+	w.WriteHeader(status)
+	_ = json.NewEncoder(w).Encode(body)
+}