Update Dockerfile for Go 1.24, no Node build step needed

SPA is vanilla JS shipped as static files in web/dist/,
no npm build step required.

Dockerfile

@@ -1,22 +1,15 @@
+# Build stage
 FROM golang:1.24-alpine AS builder
-
-RUN apk add --no-cache git
-
 WORKDIR /src
+RUN apk add --no-cache make
 COPY go.mod go.sum ./
 RUN go mod download
-
 COPY . .
+RUN go build -o /chatd ./cmd/chatd/
+RUN go build -o /chat-cli ./cmd/chat-cli/
 
-ARG VERSION=dev
-RUN go build -ldflags "-X main.Version=${VERSION}" -o /chatd ./cmd/chatd
-
-FROM alpine:3.21
-
-RUN apk add --no-cache ca-certificates
+# Final stage
+FROM alpine:latest
 COPY --from=builder /chatd /usr/local/bin/chatd
-
-WORKDIR /data
 EXPOSE 8080
-
-ENTRYPOINT ["chatd"]
+CMD ["chatd"]