add: chat service

app/chat/test/Dockerfile.api

@@ -0,0 +1,18 @@
+FROM golang:1.25-alpine AS builder
+
+RUN apk add --no-cache git
+
+WORKDIR /build
+
+COPY go-wst/ go-wst/
+COPY juwan-backend/go.mod juwan-backend/go.sum juwan-backend/
+WORKDIR /build/juwan-backend
+RUN go mod download
+
+COPY juwan-backend/ /build/juwan-backend/
+RUN CGO_ENABLED=0 go build -o /chat-api ./app/chat/api/
+
+FROM alpine:latest
+COPY --from=builder /chat-api /chat-api
+COPY juwan-backend/app/chat/test/chat-api-test.yaml /etc/chat-api.yaml
+CMD ["/chat-api", "-f", "/etc/chat-api.yaml"]