Remal Docker Images

keywords: automated deployment, docker, docker-compose, java, tomcat, weblogic

1) Ready for use Remal Docker images

• Java Docker Images

  • Oracle Java 8

• Apache-Tomcat Docker Images

  • Apache Tomcat

• Database Docker Images

  • Oracle Database Enterprise 12.2.0.1

• Oracle WebLogic Docker Images

  • Oracle WebLogic 12.2.1.4
  • Oracle WebLogic 12.2.1.4 - administration server
  • Oracle WebLogic 12.2.1.4 - managed server
  • Hello WebLogic World: dockerization of a WebLogic application

• Spluk Docker Images

  • Splunk 8.2 server
  • Oracle WebLogic administration server + Splunk forwarder
  • Oracle WebLogic managed server + Splunk forwarder

2) Remal Docker image hierarchy

3) Contributing, improvements and bug report

• Do you like organizing?
• Do you like to code?
• Do you like helping people?
• Do you like helping others code?
• Do you like fixing bugs?

Then please

• Open an issue
• Open a pull request
• Contact with us

Contact: arnold.somogyi@gmail.com

4) License

Before the build, you must download the Oracle JDK install kit from the Oracle website and accept the license indicated on that page.

Copyright (c) 2022 Remal Software, Arnold Somogyi. All rights reserved.

BSD (2-clause) licensed

Appendix A) Docker cheat sheet

• Start Docker daemon on Centos: sudo systemctl start docker

• Login to Docker Image Registry: docker -v login https://docker-registry.example.com/v2

• Logging

  • Write log to file and screen: docker logs -f <container-name> | tee output.log
  • Show only errors and warnings: docker-compose logs -f | grep -i 'error\|invalid'

• Login to a container

  • As an ordinary user: docker exec -it <container-name> /bin/bash
  • As root: docker exec -it -u root -w /root <container-name> /bin/bash

• Run the image without executing the default CMD command: docker run -d --name <container-name> <image-name>:<image-version> tail -f /dev/null

• Oracle Database in Docker

  • Run: docker run -p 1521:1521 --network="host" --name oracle-db store/oracle/database-enterprise:12.2.0.1
  • Port: 1521
  • Schema: ORCLPDB1.localdomain
  • User: SYS as SYSDBA
  • Password: Oradoc_db1

• Container IP: docker inspect -f '{{range .NetworkSettings.Networks}}{{.IPAddress}}{{end}}' <container-name>

• Docker clean-up

  1. docker info | grep "Docker Root Dir"
  2. du -h --max-depth=1 <root-dir>
  3. docker system df
     1. Containers info: docker container ls --filter "status=exited" -aq
     2. Clean-up docker containers: docker container rm $(docker container ls --filter "status=exited" -aq)
     3. Delete unused images: docker rmi $(docker image ls -aq)
     4. Delete dangling images: docker rmi $(docker image ls -aq --filter "dangling=true")
     5. Clean-up docker volumes: docker volume rm $(docker volume ls -q)
     6. Cleanup docker networks: docker network rm <NETWORK_ID>
     7. Docker prune: docker system prune --volumes

Appendix B) Useful Unix aliases

• alias ll="ls -all"
• alias alias li="docker image ls | (sed -u 1q; sort -n -k1)"
• alias lc="docker container ls -a"
• alias cs='docker container stop $(docker container ls -a -q)'
• alias rmc='docker container rm $(docker container ls -a -q)'
• alias rmi='docker volume rm $(docker volume ls -qf dangling=true) ; docker rmi $(docker image ls -qf dangling=true)'