1. Docker basic operation

Docker requires that the kernel version of the Ubuntu system is higher than 3.10

View your current kernel version via the Uname -R command

makefile

For example: Create a makefile file (Docker mirroring of the SpringBoot project_The Star Programming-Programmer Homesometer_Preis SpringBoot mirrorhttps://blog.csdn.net/junmoxi/article/details/79996524）

1. Create a folder CMD

sudo mkdier cmd

2, create a makefile file in CMD files

sudo touch makefile

The content is as follows:

FROM ubuntu
MAINTAINER tan
COPY jdk1.8.0_151 jdk1.8.0_151
COPY web web
RUN chmod 777 ./web/WEB-INF/*
ENV JAVA_HOME=/jdk1.8.0_151
ENV PATH=$JAVA_HOME/bin:$PATH
ENV CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar
EXPOSE 7070
ENTRYPOINT ["nohup","./web/WEB-INF/startup_dev.sh","&"]

3, compile and generate mirror image (. Represents the current path)

docker build -t mirrorweb:v1.0 .

mirrorweb mirror name

v1.0 mirror version number

4. Start the container from the image

docker run --net=host -e JAVA_OPTS='-Xms128m -Xmx256m -Dspring.profiles.active=prod' -p 8080:8080 -t -d mirror:v1.0

5. View container running log

docker Logs command

docker logs [options] [container]

For example: Printing container mytest application 10 lines after 10 lines

docker logs –tail=”10″ mytest

Print real -time:

docker attach [container]

6, maven packaging mirror image

mvn package docker:build

2. Install the docker in the script in ubuntu

1. Get the latest version of the docker installation package

    wget -qO- https://get.docker.com/ | sh

2. Start the docker background service

     sudo service docker start

3. Test run Hello-WORLD

     docker run hello-world

4. View the operating container

     docker ps

5. View the exit container

    docker ps -a

6. Delete the container

docker RM [container ID]

7. Delete the image (want to delete the running Images must first delete its container)

docker RMI [Mirror ID]

docker RMI mirror name: tag

8. Enter the container

docker exec -it [container ID] /bin /bash

docker exec -it -user root [container ID] /bin /bash (root permission to enter)

9. Exit container

    ctrl+d

10. Copy the host file to a directory of the container

    docker cp [filepath in master] [container name]:[path in container]

11. View container details

docker inspect [container ID]

12. View docker network

    docker network ls

3. Docker opens remote API

ubuntu

1. Modify Dokcer configuration file

vim /lib/systemd/system/docker.service

2. Modify ExecStart configuration

ExecStart=/usr/bin/dockerd -H tcp://0.0.0.0:4243 -H unix:///var/run/docker.sock

3, save

service docker restart

If the following warnings appear, please execute the SystemCTL DAEMON-Reload before restart the docker

4. Visit in the browserhttp://ip:4243/images/jsonSuccess and explanation to open success

4. Docker import export

        Mirror saving/load:docker load/docker save；

Export a mirror as a file, and then use the Docker Load command to import the file into a mirror image, which will save all historical records of the mirror. It is better to understand than the file exported by the Docker Export command, because it will save all historical records of the image.

      container import/export:docker import/docker export；

Export a container as a file, and then use the Docker Import command to introduce the container into a new image, but compared to the Docker Save command, the container file will lose all metadata and historical records. Virtual machine snapshot

mirror export

docker save -o [package name].tar [mirror]

For example:

docker save -o images.tar mongo:3.4

Mirror introduction

docker load -i [package name].tar

For example:

docker load -i jdk.tar

container export

Docker Export [Container_id]> [Container Express Name]

For example:

docker export devcie>device.tar

container import

docker import [container express name]

For example:

docker import device.tar