Please link/add a page with the list of Exit status codes for docker containers.

docker-machine inspect --format='{{json .Driver}}' swarm-master | jq
Giving error: bash: jq: command not found

I noticed this repository does not have a license in place

Also, there's no MAINTAINERS, and CONTRIBUTING.md file

Do we require a DCO sign-off for contributions here? (fwiw, there's a template for open source projects in our open source repo; https://github.com/docker/opensource/tree/master/project-template)

ping @vcoisne

docker: root@debian:/home/debian# docker container lsCONTAINER ID IMAGE - Pastebin.com

How do I forward packets from 10.228.228.2 to the docker network?
Forwarding via iproute2 only works for 192.168.0.226/0.0.0.0/127.0.0.1 (virtual machine networks)
Is there a way to send packets through iproute2 to the docker network - because the game server is running in it, game server port 25565.

In the section,

"The arungupta/wildfly-couchbase-javaee7 image starts WildFly and deploys application WAR file built from https://github.com/arun-gupta/couchbase-javaee. This image built using https://github.com/arun-gupta/docker-images/blob/master/wildfly-couchbase-javaee7/Dockerfile."

The docker file is having ADD command and it is preferred to have COPY

In the following instruction set in Chapter 4 (Run a Docker Container) an instruction should be added to stop container before proceeding.

If container isn't stopped, we would end up in a port conflict error:

docker: Error response from daemon: failed to create endpoint sharp_panini on network bridge: Bind for 0.0.0.0:8080 failed: port is already allocated.

Original instruction set:

Run Container with Specified Port

Lets stop the previously running container as:

docker stop docker ps | grep tomee | awk '{print $1}'
Restart the container as:

docker run -d -p 8080:8080 tomee
The format is -p hostPort:containerPort. This option maps container ports to host ports and allows other containers on our host to access them.

Now we’re ready to test http://dockerhost:8080 again. This works with the exposed port, as expected.

Add the step here: docker stopdocker ps | grep tomee | awk '{print $1}'``

At the start of the presentation it was stated (paraphrasing here) that:

Yes, there's currently a lot of hype around docker, nonetheless, it's believed that docker will be around for a long time because it solves a real problem.

Can you define the "real problem" succinctly in an intro slide? It may be worthwhile to add an intro slide that states the core issue and, in a line or two, explains how docker addresses / solves the core problem, which ends up being the docker "value prop" to an organization.

Thanks!

remove JQ in follwoing commmand from your documentation or provide the instruction to install JQ

docker-machine inspect --format='{{json .Driver}}' swarm-master | jq

At https://github.com/docker/community/blob/master/tutorials/java/chapters/ch06.adoc#start-application-using-docker-compose, it needs to say

1. start a new directory
2. create a new compose definition

This is follow up from #48

tomee $ curl http://192.168.99.100:8080/javaee-simple-sample/resources/persons | xml-fmt
-bash: xml-fmt: command not found
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 343 100 343 0 0 1321 0 --:--:-- --:--:-- --:--:-- 1324
(23) Failed writing body
tomee $ curl http://192.168.99.100:8080/javaee-simple-sample/resources/persons | xml
-bash: xml: command not found
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 343 100 343 0 0 38195 0 --:--:-- --:--:-- --:--:-- 42875
(23) Failed writing body

The Swarm presentation on this repo is outdated. Is there any newer presentation that can be added on Docker Swarm? Something like the "What's new Docker 1.12" from DockerCon 2016?

"Docker Compose applications can use “classic” container linking that is confined to a single host. Alternatively, it can use multi-host networking introduced in Docker 1.9."

From chapter 5, the above text is no longer applicable as networking/linking is taking care of by the docker networking layer in >= 1.10.

A brief explanation of the new linking mechanism would be good.

A brief section on how to control networking/linking would be nice.

@arun-gupta
The docker-compose and docker commands need sudo to run on Ubuntu 15.10 (Wily Werewolf). This is should be noted in install instructions.

Hello.
I have two docker container running with logging to syslog of the host machine. The logs are routed correctly but all of them are being logged as ERRORs.
Regards, Dawid.

Clone the sample code from https://github.com/arun-gupta/docker-java-sample/.

need to add cd to new directory: cd docker-java-sample

Create the Docker image:
mvn package -Pdocker

Could someone help take a look at this issue: http://stackoverflow.com/questions/41775664/docker-cannot-map-var-run-mysqld-mysqld-sock ? Basically, I cannot do "-v /var/run/mysqld/mysqld.sock:/var/run/mysqld/mysqld.sock", which used to work with 12.04 docker. Thanks a lot.

hi mano

i got this

mervo@sharkbay:/docker-birthday/community/Docker-Birthday-3/example-voting-app$ docker-compose up
Unsupported config option for services service: 'worker'
mervo@sharkbay:/docker-birthday/community/Docker-Birthday-3/example-voting-app$

By 'Dockerizing' what is the benefit? and how it could be explained in detail.

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Hi Team,

Please help me to resolve below issue

PS C:\Users\Administrator> docker version
Client:
Version: 1.12.0-dev
API version: 1.24
Go version: go1.5.3
Git commit: 2b97201
Built: Tue Apr 26 23:51:36 2016
OS/Arch: windows/amd64
An error occurred trying to connect: Get http://%2F%2F.%2Fpipe%2Fdocker_engine/v1.24/version: open //./pipe/docker_engin
e: The system cannot find the file specified.
PS C:\Users\Administrator> docker images
An error occurred trying to connect: Get http://%2F%2F.%2Fpipe%2Fdocker_engine/v1.24/images/json: open //./pipe/docker_e
ngine: The system cannot find the file specified.

version: '2'
services:
mycouchbase:
container_name: "db"
image: arungupta/couchbase
ports:
- 8091:8091
- 8092:8092
- 8093:8093
- 11210:11210
mywildfly:
image: arungupta/wildfly-couchbase-javaee7
environment:
- COUCHBASE_URI=db
ports:
- 8080:8080

It would be nice to explain the depends-on feature and health checks. If these features are not yet ready for prime time, it would be nice to add an example of a script that would fill in the gaps for the airline example in chapter 5.

Hello, I have one confusion about docker, normally when I develop website, I can access files under IP:/images/one.png for example but with docker, this no longer works how can I do that?

Change

curl http://$(docker-machine ip swarm-node-01):8080/couchbase-javaee/resources/airline

to

curl http://$(docker-machine ip swarm-node-01):8080/airlines/resources/airline

The URL for Curated tutorial content on README returns 404. Please check and update. Thanks.

Hi Arun,

Can we use Broadleaf Ecomm instead of a mvn arch type to generate a helloworld application...?

Thanks ,
Sriram Mageswaran.

curl http://192.168.99.100:8080/javaee7-simple-sample/resources/persons | xml-fmt
should be
curl http://dockerhost:8080/javaee-simple-sample/resources/persons | xml-fmt

Also, xml-fmt is not installed on macs. Running "brew install XML-Coreutils" fixes this.

curl http://dockerhost:8080/airlines/resources/airline
[{"travel-sample":{"country":"United States","iata":"Q5","callsign":"MILE-AIR","name":"40-Mile Air","icao":"MLA","id":10,"type":"airline"}}, {"travel-sample":{"country":"United States","iata":"TQ","callsign":"TXW","name":"Texas Wings","icao":"TXW","id":10123,"type":"airline"}}, {"travel-sample":{"country":"United States","iata":"A1","callsign":"atifly","name":"Atifly","icao":"A1F","id":10226,"type":"airline"}}, {"travel-sample":{"country":"United Kingdom","iata":null,"callsign":null,"name":"Jc royal.britannica","icao":"JRB","id":10642,"type":"airline"}}, {"travel-sample":{"country":"United States","iata":"ZQ","callsign":"LOCAIR","name":"Locair","icao":"LOC","id":10748,"type":"airline"}}, {"travel-sample":{"country":"United States","iata":"K5","callsign":"SASQUATCH","name":"SeaPort Airlines","icao":"SQH","id":10765,"type":"airline"}}, {"travel-sample":{"country":"United States","iata":"KO","callsign":"ACE AIR","name":"Alaska Central Express","icao":"AER","id":109,"type":"airline"}}, {"travel-sample":{"country":"United Kingdom","iata":"5W","callsign":"FLYSTAR","name":"Astraeus","icao":"AEU","id":112,"type":"airline"}}, {"travel-sample":{"country":"France","iata":"UU","callsign":"REUNION","name":"Air Austral","icao":"REU","id":1191,"type":"airline"}}, {"travel-sample":{"country":"France","iata":"A5","callsign":"AIRLINAIR","name":"Airlinair","icao":"RLA","id":1203,"type":"airline"}}]

The above could confuse some people. It might be best to separate the command from the expected output.

Hello, I'm trying to join docker community / slack channel. I always end up in the page : https://dockercommunity.slack.com/signup#/ but I do not find a way to reach administrator at Docker Community for an invitation. Sign-up is not possible.

Hello,

I put the passwords of an elastic stack in a ".env" file.

File .env:

ELASTIC_PASSWORD=elastic

…

elasticsearch:
image: docker.elastic.co/elasticsearch/elasticsearch:7.16.3
env_file:

.env
…

When executing the stack, it works very well and the environment variables are updated in the stack. stack is ok.

Now when I put this ".env" file in secret docker the environment variables are not updated.

....
secrets:
elk_secret:
file: .env

services:
elasticsearch:
image: docker.elastic.co/elasticsearch/elasticsearch:7.16.3
secrets:

elk_secret
....
Is there a trick to be able to put the ".env" file in docker secret and have the stack environment variables updated.

docker version
Client:
Version: 18.03.1-ce
API version: 1.37
Go version: go1.9.5
Git commit: 9ee9f40
Built: Thu Apr 26 07:17:14 2018
OS/Arch: linux/amd64
Experimental: false
Orchestrator: swarm

Server:
Engine:
Version: 18.03.1-ce
API version: 1.37 (minimum version 1.12)
Go version: go1.9.5
Git commit: 9ee9f40
Built: Thu Apr 26 07:15:24 2018
OS/Arch: linux/amd64
Experimental: false

docker-compose version
docker-compose version 1.21.2, build a133471
docker-py version: 3.3.0
CPython version: 3.6.5
OpenSSL version: OpenSSL 1.0.1t 3 May 2016

Best regard

Olivier

While attempting to reset my password with Firefox 59.0.2 on Ubuntu 17.10 or Chromium 65.0.3325.181 on https://id.docker.com/change-password/... (link received via mail[1]) I get the feedback Failed to reset password:

after pasting the password bottled barrier potholed faucet into both the password and the repeat field. If I enter 123 I see a validation message below the field telling me that the password needs to be at least 6 characters long which I don't see after pasting, so the problem might be have another reason. This reason should have been included into the error message.

[1] Plaintext mail which contain HTML code look quite unprofessional. I won't open more than one issue before I'm sure that this is the right place, though.

In the Deploy a WAR file to Application Server section, when hitting "curl http://192.168.99.100:8080/javaee-simple-sample/resources/persons | xml-fmt", I'm getting the error "bash: xml-fmt: command not found", as xml-fmt isn't setup to mean anything on my computer.

Hitting "curl http://192.168.99.100:8080/javaee-simple-sample/resources/persons" does give me the xml file.

Since a while, container images can be addressed by their content using the registry/namespace/repository@digest syntax, where digest is usually of the form sha256:.... How can I learn this image content address remotely without pulling the image using docker pull ... and then running docker inspect ... | jq -r .[0].RepoDigests[0]?

The use-case is writing the FROM line of a Dockerfile, where I select the base image on e.g. Docker Hub or Quay.io. Neither of the two seems to be able to tell me the digest right away, so I would like to know the docker command which prints this or write a script to figure this out.

We can have a Vagrant file. That would make the setup one step easy.

May be we can mark it as enhancement.

In Stop Container section, the command given for stopping all containers is "docker stop $(docker ps -q)". That command didn't work for me. Did you mean -a or -aq?

I can't seem to join the community slack channel. Is there a way that I can get an invite from the docker community slack admin with my email?

Hi, I am running docker 17.03.2-ce on RHEL 7.5. I have set up a docker registry on another instance. When I try to pull docker images from that registry it gives an error of "Error response from daemon: Get https://my_domain:5000/v1/_ping: http: server gave HTTP response to HTTPS client".
I have also added a flag in “/usr/lib/systemd/system/docker.service” with ExecStart=/usr/bin/dockerd –insecure-registry docker-repo.example.com:5000. But it doesn't work for me. Can anyone help for the same?

docker-machine create -d virtualbox --virtualbox-disk-size "5000" --swarm --swarm-master --swarm-discovery="consul://$(docker-machine ip consul-machine):8500" --engine-opt="cluster-store=consul://$(docker-machine ip consul-machine):8500" --engine-opt="cluster-advertise=eth1:2376" swarm-master

Please specify the command "docker run swarm list consul://$(docker-machine ip consul-machine):8500" in a new line to avoid confusion

https://github.com/docker/community/blob/master/tutorials/java/chapters/ch06.adoc:
Example 11. Containers on Docker Swarm Master:
"You can also query the Consul discovery service to find the list of nodes in the cluster using docker run swarm list consul://$(docker-machine ip consul-machine):8500"

Hii, @AlbaRoza i am trying to join the docker community and it is not working i saw in the comments that you are helping developers can you help me please.

@arun-gupta
Setup instructions should specify that docker-machine is optional for linux.

Is there a command command completion script/plugin for bash shell.

docker/for-linux#328

When I tried "docker run helloworld" the first time there was an error in my file. Should I stop/kill/remove the helloworld image? It might be a nice tip to add:

Problems with your image? Just get rid of it. Use the "docker xxx command"

In chapter 3, under the "Package and Run Java Application using Docker Maven Plugin" section:

Suggested for minor tweak, after this instruction:

"Clone the sample code from https://github.com/arun-gupta/docker-java-sample/."

Would be helpful to prompt user to change to the 'docker-java-sample' directory before creating the docker image (i.e. before running this the “mvn package -Pdocker" command)

Hi ,

Scaling docker container in docker compose having a port mapping is causing a port already in use error.

Error below docker-compose.exe scale mywildfly=2
The "mywildfly" service specifies a port on the host. If multiple containers for this service are created on a single host, the port will clash.
Creating and starting 2 ... error

ERROR: for 2 failed to create endpoint dockerfiles_mywildfly_2 on network dockerfiles_default: Bind for 0.0.0.0:8080 failed: port is already allocated

docker-compose.yml is

version: '2'
services:
mycouchbase:
container_name: "db"
image: arungupta/couchbase
ports:
- 8091:8091
- 8092:8092
- 8093:8093
- 11210:11210
mywildfly:
image: arungupta/wildfly-couchbase-javaee7
environment:
- COUCHBASE_URI=db
ports:
- 8080:8080

and the command to scale is : docker-compose.exe scale mywildfly=2.

@kirsid

I want to join slack channel soi visited the registration page and found this error
See this for more reference
https://community.docker.com/registrations/groups/4316

java -cp maven/helloworld-1.0-SNAPSHOT.jar org.examples.java.App is hardcoded (chapter 3).
When the version changes the jar will not be there.