如何运行dockerfile
# Use the official image as a parent image.
FROM node:current-slim
# Set the working directory.
WORKDIR /usr/src/app
# Copy the file from your host to your current location.
COPY package.json .
# Run the command inside your image filesystem.
RUN npm install
# Inform Docker that the container is listening on the specified port at runtime.
EXPOSE 8080
# Run the specified command within the container.
CMD [ "npm", "start" ]
# Copy the rest of your app's source code from your host to your image filesystem.
COPY . .
dockerfile示例
FROM ubuntu:18.04
COPY . /app
RUN make /app
CMD python /app/app.py
docker ARG
$ docker build --build-arg some_variable_name=a_value
如何从自定义文件名创建docker镜像
cat DockerFile.debian.foo | docker build -t debian.foo -
dockerfile env变量
FROM busybox
ENV foo /bar
WORKDIR ${foo} # WORKDIR /bar
ADD . $foo # ADD . /bar
COPY \$foo /quux # COPY $foo /quux
dockerfile运行应用程序cmd
RUN apt-get install python3
CMD echo "Hello world"
ENTRYPOINT echo "Hello world"