Example of taking a docker image and modifying it using a Dockerfile
Create the DockerFile
This dockerfile will specify an initial docker image and perform some tasks on it. This will result in the creation of a new image when we issue the docker build command.
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- specify the starting docker image
- copy files into the image
- run commands in the image
- specify the internal ports that will be used by the image
- define the entrypoint (what gets executed at image startup)
Dockerfile
| Code Block | ||
|---|---|---|
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FROM jamesdbloom/mockserver |
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LABEL placodermi.component=mockserver |
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WORKDIR /opt/mockserver |
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# Artifacts COPY entrypoint.sh /opt/mockserver/entrypoint.sh |
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COPY MockInitializer.java /opt/mockserver/MockInitializer.java |
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RUN chmod +x /opt/mockserver/entrypoint.sh |
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EXPOSE 1080 EXPOSE 1090 ENTRYPOINT ["/opt/mockserver/entrypoint.sh"] |
Build the Image
Run the Dockerfile by issuing the following command
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ie. > docker rim mockserver_image
Run the image
Now that you have your image, you can run this image by issuing the following command:
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ie. > docker run -it --rm --entrypoint bash mockserver_image
Make a Container
Now that you have confirmed that the image works, you can make it a container by issuing the following command:
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That's the general basics of it all.
Creating a New Container in CloakedJS using Ansible
If you want to create a docker container in CloakedJS, have a look at the mockserver implementation in the following folders:
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folder/file
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Purpose
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folder/file
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Purpose
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Define the building of the image. Folder structure:
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Define the building of the container.
Folder structure:
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Script to run the tasks mentioned above to build and deploy the docker image/container.
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