Example of the use of multi stage docker build feature

dockerfile-without-multi-stage

#   Copyright (c) 2021  Thiago Lopes da Silva
 
#   Licensed under the Apache License, Version 2.0 (the "License");
#   you may not use this file except in compliance with the License.
#   You may obtain a copy of the License at
 
#       http://www.apache.org/licenses/LICENSE-2.0
 
#   Unless required by applicable law or agreed to in writing, software
#   distributed under the License is distributed on an "AS IS" BASIS,
#   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
#   See the License for the specific language governing permissions and
#   limitations under the License.

FROM node:14.17.0-alpine

LABEL stage="builder"

RUN apk update && apk add bash

WORKDIR /app

COPY . /app

RUN addgroup -S container-group && adduser -S container-user -G container-group

RUN chmod a+w .

USER container-user

RUN [ "yarn" ]

RUN [ "yarn", "build" ]

RUN ["rm", "-rf", "node_modules"]

RUN [ "yarn", "--production" ]

CMD [ "node", "dist/src/index.js" ]

For more details about this gist go to the repository https://github.com/thiagoolsilva/multi-stage-build-docker-example