kubevela增加Dockerfile的镜像

[flycentos]

希望kubevela能够集成Dockerfile的修改，包括基础镜像及运行镜像，可参考如下:

Dockerfile

Dockerfile

FROM golang:1.13-rc-alpine3.10 as builder
WORKDIR /app
COPY main.go .
RUN go build -o kubevela-demo-cicd-app main.go

FROM alpine:3.10
WORKDIR /app
COPY --from=builder /app/kubevela-demo-cicd-app /app/kubevela-demo-cicd-app
ENTRYPOINT ./kubevela-demo-cicd-app
EXPOSE 8088

[chivalryq]

Why do we need this? Can you provide a use case?