refactor: update Dockerfile for multi-stage build and add static file embedding for improved resource handling

Author: iwanhae

Dockerfile

@@ -1,23 +1,24 @@
 # Start by building the application.
-FROM golang:1.24-bookworm AS build
+FROM node:22-alpine AS build-web
+WORKDIR /app
+COPY . .
+RUN npm install
+RUN npm run build
 
+FROM golang:1.24-alpine AS build
 WORKDIR /go/src/kuview
 COPY . .
+COPY --from=build-web /app/dist /go/src/kuview/dist
 
 ENV CGO_ENABLED=0
-RUN go build -o /go/bin/kuview cmd/server/main.go
+RUN go build -v -o /go/bin/kuview cmd/server/main.go
+
 
-FROM node:22-alpine AS build-web
-WORKDIR /app
-COPY . .
-RUN npm install
-RUN npm run build
 
 # Now copy it into our base image.
 FROM gcr.io/distroless/static-debian12
 WORKDIR /app
 COPY --from=build /go/bin/kuview /app/kuview
-COPY --from=build-web /app/dist /app/dist
 
 EXPOSE 8001
 CMD ["/app/kuview"]

pkg/server/server.go

@@ -6,6 +6,7 @@ import (
 	"net/http"
 	"sync"
 
+	"github.com/iwanhae/kuview"
 	"github.com/iwanhae/kuview/pkg/controller"
 	"github.com/iwanhae/kuview/pkg/server/middleware"
 	"github.com/labstack/echo/v4"
@@ -62,8 +63,10 @@ func New(cfg *rest.Config) (*Server, error) {
 		},
 	}))
 	static.Use(echomiddleware.StaticWithConfig(echomiddleware.StaticConfig{
-		Root:  "dist",
-		HTML5: true,
+		Root:       "dist",
+		HTML5:      true,
+		Browse:     true,
+		Filesystem: http.FS(kuview.DistFS),
 	}))
 
 	s.Use(middleware.RequestID())

static.go

@@ -0,0 +1,6 @@
+package kuview
+
+import "embed"
+
+//go:embed dist
+var DistFS embed.FS