Automated build of Varnish with Docker
Varnish environment variables
Varnish will make of the following environment variables.
VARNISH_BACKEND_PORT 80 VARNISH_BACKEND_IP 172.17.42.1 VARNISH_PORT 80
Use the pre built image
The pre built image can be downloaded using docker directly. After that you do not need to use this command again, you will have the image on your machine.
$ docker pull jacksoncage/varnish
Build the docker image by yourself
If you prefer you can easily build the docker image by yourself. After this the image is ready for use on your machine and can be used for multiple starts.
$ cd varnish-docker $ docker build -t jacksoncage/varnish .
Start the container
The container has all pre requisites set up to run any varnish application. Specify all needed environment variables.
$ docker run -i -d -p 80 -e VARNISH_BACKEND_PORT=8080 -v /etc/localtime:/etc/localtime jacksoncage/varnish
Start the container and keep control
The command above starts the container in deamon mode (-d) and runs in the background. If you want to start it by yourself just to see what happens use this command:
$ docker run -i -t -p 80 -e VARNISH_BACKEND_PORT=8080 jacksoncage/varnish bash
Notice the two changes made here, first we replaced the deamon switch (-d) with the tty switch (-t) which pipes the std in and std out to your terminal.
You now end up as a root user in the docker container and can do simple things like ls, cd and more. More complex things can be achieved after a
apt-get install of one or more software(s) of choice.
Get the container ip and port
The first command inspects your created container and get the IPv4 address. Second command docker exported port for 8080.
$ docker inspect <container_id> | grep IPAddress | cut -d '"' -f 4 $ docker port <container_id> 80 | cut -d ":" -f2
Now go to
<your container's ip>:<container's port> in your browser
Stop the container
Stopping a running container is possible via the docker api. If only one instance of this container is running this command will stop it:
$ docker stop `docker ps |grep jacksoncage/varnish |cut -d\ -f1`