fix add missing files

server/Dockerfile

@@ -1,20 +1,33 @@
-FROM golang:1.23-alpine AS builder
+# Context: project root
+# docker build -f server/Dockerfile -t containarr-server .
 
+# ── Stage 1 : build SvelteKit ─────────────────────────────────────────────────
+FROM node:20-alpine AS web-builder
+WORKDIR /web
+COPY web/package*.json ./
+RUN npm ci
+COPY web/ ./
+RUN npm run build
+# Output: /web/build/
+
+# ── Stage 2 : build Go server ─────────────────────────────────────────────────
+FROM golang:1.23-alpine AS go-builder
 RUN apk add --no-cache gcc musl-dev
-
 WORKDIR /src
-COPY go.mod go.sum ./
-COPY . .
-RUN go mod tidy && CGO_ENABLED=1 GOOS=linux go build -ldflags="-s -w" -o /bin/containarr-server ./cmd/server
+COPY server/go.mod server/go.sum ./
+RUN go mod download
+COPY server/ ./
+RUN CGO_ENABLED=1 GOOS=linux go build -ldflags="-s -w" -o /bin/containarr-server ./cmd/server
 
-# ── Runtime ───────────────────────────────────────────────────────────────────
+# ── Stage 3 : image finale ────────────────────────────────────────────────────
 FROM alpine:3.20
-
 RUN apk add --no-cache ca-certificates tzdata
 
-COPY --from=builder /bin/containarr-server /usr/local/bin/containarr-server
+WORKDIR /app
+COPY --from=go-builder /bin/containarr-server ./containarr-server
+COPY --from=web-builder /web/build ./web/build
 
 VOLUME ["/data"]
 EXPOSE 8080 9090
 
-ENTRYPOINT ["containarr-server"]
+ENTRYPOINT ["/app/containarr-server"]