Docker
Jump to navigation
Jump to search
The printable version is no longer supported and may have rendering errors. Please update your browser bookmarks and please use the default browser print function instead.
| Tool | |
|---|---|
| name | Docker |
| logo | 
|
| logourl | 
|
| website | https://www.docker.com/ |
| wikipediaurl | https://en.wikipedia.org/wiki/Docker_%28software%29 |
| stackoverflow link | http://stackoverflow.com/questions/tagged/docker |
| no of stackoverflow questions | 49,616 |
| Category | Build |
| pollResult | |
Virtual Machine versus Container
Introduction to Docker by Solomon Hykes
- Shipping code to the server is too hard
- Docker uses separation of concerns (just like the Y-principle) to make shipping easier
- Docker images are manipulated git style with ids, diffs, commits, pushs and pulls
Links
Installation
Installation of Docker on Mac OS X
- Download Docker Toolbox
- Install (e.g. DockerToolbox-1.8.3.pkg)
- Either Use Kitematic Visual Management for Docker or Docker Quickstart Terminal Command Line Interface
## .
## ## ## ==
## ## ## ## ## ===
/"""""""""""""""""\___/ ===
~~~ {~~ ~~~~ ~~~ ~~~~ ~~~ ~ / ===- ~~~
\______ o __/
\ \ __/
\____\_______/
docker is configured to use the default machine with IP 192.168.99.100
For help getting started, check out the docs at https://docs.docker.com
Installation of Docker on Linux
Docker command examples
upgrade docker machine
docker-machine upgrade default
list running docker processes
bash-3.2$ docker ps CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
get and start the latest ubuntu image
docker run ubuntu
see which images are available
bash-3.2$ docker images REPOSITORY TAG IMAGE ID CREATED VIRTUAL SIZE ubuntu latest 0a17decee413 4 days ago 188.4 MB bash-3.2$
start a bash shall in ubuntu
docker run -i -t ubuntu /bin/bash
modify the image by creating new directory
root@84506e084bb9:/#touch /test
look at processes again and check the difference of the image with the given container id
bash-3.2$ docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
84506e084bb9 ubuntu "/bin/bash" 2 minutes ago Up 2 minutes pensive_wozniak
bash-3.2$ docker diff 84506e084bb9
A /test
install some software
root@84506e084bb9:/#apt-get install php5
root@84506e084bb9:/#apt-get install mysql-server
commit the changes to images with the name "lamp" and check the image list again
bash-3.2$ docker commit 84506e084bb9 lamp
8ba719cd9b0eae589b70f6b6ddd567b4c20f997fc2d8f4c6feb313d73c2d5c3a
bash-3.2$ docker images
REPOSITORY TAG IMAGE ID CREATED VIRTUAL SIZE
lamp latest 8ba719cd9b0e 20 seconds ago 349.5 MB
ubuntu latest 0a17decee413 4 days ago 188.4 MB
bash-3.2$
docker version
Client:
Version: 1.8.3
API version: 1.20
Go version: go1.4.2
Git commit: f4bf5c7
Built: Mon Oct 12 18:01:15 UTC 2015
OS/Arch: darwin/amd64
Server:
Version: 1.8.3
API version: 1.20
Go version: go1.4.2
Git commit: f4bf5c7
Built: Mon Oct 12 18:01:15 UTC 2015
OS/Arch: linux/amd64
Useful scripts
Static content example
Use the nginx image from https://github.com/docker-library/docs/tree/master/nginx
docker run --name icon_html -v /Users/wf/Documents/workspace/com.bitplan.icons/src/main/resources/com/bitplan/icons:/usr/share/nginx/html:ro -d -p 8080:80 nginx
find out the ip address for the mapping (Mac OS X)
docker-machine env default
export DOCKER_HOST="tcp://192.168.99.100:2376"
try out via
http://192.168.99.100:8080/48x48/shadow/wrench.png
Dockerfile
The process can be automated using a Dockerfile
Critics
- http://www.boycottdocker.org/
- https://thehftguy.com/2016/11/01/docker-in-production-an-history-of-failure/
- https://github.com/moby/moby/issues/23203
- https://www.reddit.com/r/docker/comments/8n7app/the_joy_of_containers_virtualisation_and/
Docker book