Practical Docker

This is sample project to accommodate my "Practical Docker" presentation. Clone this repository and then follow all the instructions listed in this README.

Installation

You will need 2 things installed

Docker
Git

Optionally, a good text editor. I highly recommend VS Code with the Docker Extension.

If you wish to go all the way you can (optionally) install the following:

Docker installation

For modern OS'es you can find download instructions here
If your OS version is not supported by the native clients then you will need to install docker toolbox - https://docs.docker.com/toolbox/overview/

There are two items of note

Docker requires a slew of permissions to run. So please make sure you grant Docker all the permissions it needs
Please treat this installation like any other. Different operating systems and different set ups (especially in company-issued laptops) can make this installation tricky. Google, and perhaps your desktop support team (if using a company-issued laptop) are your friends. Debugging this can be tricky.

Testing your installation

docker version;
Client: Docker Engine - Community
 Version:           19.03.5
 API version:       1.40
 Go version:        go1.12.12
 Git commit:        633a0ea
 Built:             Wed Nov 13 07:22:34 2019
 OS/Arch:           darwin/amd64
 Experimental:      true

Server: Docker Engine - Community
 Engine:
  Version:          19.03.5
  API version:      1.40 (minimum version 1.12)
  Go version:       go1.12.12
  Git commit:       633a0ea
  Built:            Wed Nov 13 07:29:19 2019
  OS/Arch:          linux/amd64
  Experimental:     true
 containerd:
  Version:          v1.2.10
  GitCommit:        b34a5c8af56e510852c35414db4c1f4fa6172339
 runc:
  Version:          1.0.0-rc8+dev
  GitCommit:        3e425f80a8c931f88e6d94a8c831b9d5aa481657
 docker-init:
  Version:          0.18.0
  GitCommit:        fec3683

Warm up your engines!

You want to do this BEFORE you show up for the workshop!! Running this over a hotel wifi connection might not go well. Using the command (bash) prompt:

docker pull alpine:3.12;
docker pull jenkins/jenkins:2.225;
docker pull mongo:3.6.17;
docker pull nginx:1.17.9-alpine;
docker pull openjdk:8u131-jdk;
docker pull openjdk:8u131-jre;
docker pull portainer/portainer:latest;
docker pull tomcat:9;
docker pull ubuntu:20.10;
docker pull fedora:33;

The final test

Once again, at the command prompt:

> docker run -d --name myjenkins -p 8080:8080 jenkins/jenkins:2.225;
> docker logs -f myjenkins;

You should see the Jenkins logs flowing by eventually settling with the following:

Sep 18, 2018 11:38:19 PM hudson.model.UpdateSite updateData
INFO: Obtained the latest update center data file for UpdateSource default
Sep 18, 2018 11:38:19 PM hudson.WebAppMain$3 run
INFO: Jenkins is fully up and running
Sep 18, 2018 11:38:19 PM hudson.model.UpdateSite updateData
INFO: Obtained the latest update center data file for UpdateSource default
Sep 18, 2018 11:38:20 PM hudson.model.DownloadService$Downloadable load
INFO: Obtained the updated data file for hudson.tasks.Maven.MavenInstaller
Sep 18, 2018 11:38:20 PM hudson.model.DownloadService$Downloadable load
INFO: Obtained the updated data file for hudson.tools.JDKInstaller
Sep 18, 2018 11:38:20 PM hudson.model.AsyncPeriodicWork$1 run
INFO: Finished Download metadata. 7,798 ms
--> setting agent port for jnlp
--> setting agent port for jnlp... done

Visit http://localhost:8080 and see if you see the Jenkins login page. If you do, you are all set to go!!

# ctrl-c to break out of the logs
docker container stop myjenkins;
docker container rm myjenkins;

Woot!!! See you soon!!!

Notes

This project consists of a slew of Dockerfiles that demonstrate how to (and not to) use a few select Dockerfile instructions
This project also packages the artifact that this project produces so you do not need Java installed

looselytyped/practical-docker

looselytyped

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