Build "sleep" Image from Alpine
How to Build my "sleep" Docker image from the Alpine image? I want the container to sleep for 10 hours.
If you want to build a new Docker image that can be started with a 10-hour sleep command, you can follow this tutorial.
1. Create a "Dockerfile" file with 2 instructions:
$ mkdir sleep $ cd sleep $ vi Dockerfile FROM alpine ENTRYPOINT ["/bin/sleep","3600"]
2. Build a new image named as "sleep" using the Dockerfile in the current directory.
$ docker build --tag sleep . Sending build context to Docker daemon 17.92kB Step 1/2 : FROM alpine ---> 055936d39205 Step 2/2 : ENTRYPOINT ["/bin/sleep","3600"] ---> Running in 6b7e3a4b320b Removing intermediate container 6b7e3a4b320b ---> 984ecb85411c Successfully built 984ecb85411c Successfully tagged sleep:latest
3. Create a new container from the image and run it in the background.
$ docker container run --name sleep --detach sleep a66d6baf919fd65f95760a1ea182ddd283b9823cfd4bab345339cb0907f7da35
4. Check the container. It should be still running.
$ docker container list --latest CONTAINER ID IMAGE COMMAND CREATED STATUS NAMES e7507beb58a6 hello "/bin/sleep 3600" 8 seconds ago Up 8 seconds sleep
5. Send a command to the container to run.
$ docker exec sleep ps -ef PID USER TIME COMMAND 1 root 0:00 /bin/sleep 3600 6 root 0:00 ps -ef
As you can see, we have created a new Docker image, with "alpine" as the based. It is configured to start a 10-hour sleep.
2019-02-12, 352👍, 0💬
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