docker-curriculum | comprehensive tutorial | Continuous Deployment library

You can use Ip address of docker instead of localhost to see the webpage.

Following command will help to find the docker ip

You have to open http://localhost:8888 if that is the port you map on the host. (And that before pressing Ctrl+C to quit ;) )

These are a bit different things: volumes and bind mounts. Bind mounts let you specify folder on host machine, which would serve as a storage. Volumes (at lease for local driver) also have folders on host machines, but their location is managed by Docker and is sometimes a bit more difficult to find.

When you specify volume in docker-compose.yml, if your path starts with / or . it becomes a bind mount, like in web service. Otherwise, if it is a single verb, it is a volume, like for es service.

You can inspect all volumes on your host machine by running docker volume ls.

What is happening for the esdata1 ? My guess is that it means creating a volume (The closest thing I can think of is a disk partition) and name it esdata1 and mount it on /usr/share/elasticsearch/data, am I correct on this guess?

That's all correct.

I do not pretend on setting up the rules, but in general, volumes are more suitable for sharing common data between several containers, like in docker-compose, while bind mounts suite better for sharing data from host to container, like some initial configs for services.

The author of the official tutorial forgot to add that you have to add the tag to the image name in the Dockerrun.aws.json file per below in gedit or other editor where :firsttry is the tag:

Running a docker container requires the user to be a member of the docker group. By default, when you install docker, the only user that is added to it is root. You can add your own user to this group if you want to run docker containers from it.

If you are working on a proxy. There is a strong probability that docker containers cannot reach the internet at all.

You can test this by running