Dockerfile文件实例¶

实例:

# This is a comment
FROM ubuntu:14.04
MAINTAINER Kate Smith <ksmith@example.com>
RUN apt-get update && apt-get install -y ruby ruby-dev
RUN gem install sinatra

实例-时区:

实例1:
// 前提宿主机有文件/usr/share/zoneinfo/Asia/Shanghai
// 使用docker镜像的, 要求镜像有此文件
RUN copy /usr/share/zoneinfo/Asia/Shanghai /etc/localtime && echo "Asia/Shanghai" > /etc/timezone

实例2:
RUN apk add tzdata && cp /usr/share/zoneinfo/Asia/Shanghai /etc/localtime \
    && echo "Asia/Shanghai" > /etc/timezone \
    && apk del tzdata

实例:

# Nginx
#
# VERSION               0.0.1

FROM      ubuntu
MAINTAINER Victor Vieux <victor@docker.com>

RUN apt-get update && apt-get install -y inotify-tools nginx apache2 openssh-server

# Firefox over VNC
#
# VERSION               0.3

FROM ubuntu

# Install vnc, xvfb in order to create a 'fake' display and firefox
RUN apt-get update && apt-get install -y x11vnc xvfb firefox
RUN mkdir /.vnc
# Setup a password
RUN x11vnc -storepasswd 1234 ~/.vnc/passwd
# Autostart firefox (might not be the best way, but it does the trick)
RUN bash -c 'echo "firefox" >> /.bashrc'

EXPOSE 5900
CMD    ["x11vnc", "-forever", "-usepw", "-create"]

# Multiple images example
#
# VERSION               0.1

FROM ubuntu
RUN echo foo > bar
# Will output something like ===> 907ad6c2736f

FROM ubuntu
RUN echo moo > oink
# Will output something like ===> 695d7793cbe4

# You now have two images, 907ad6c2736f with /bar, and 695d7793cbe4 with
# /oink.

格式¶

一个镜像编译一个镜像发布¶

实例:

# build step
FROM golang:1.12 as builder

LABEL maintainer="sunnydog0826@gmail.com"

COPY . /build/

WORKDIR /build

RUN CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build .

# run step
FROM alpine

RUN apk update \
    && apk add --no-cache ca-certificates \
    && rm -rf /var/cache/apk/*

# copy bin from build step
COPY --from=builder /build/drone-dingtalk-message /bin/

ENTRYPOINT ["/bin/drone-dingtalk-message"]