3.3. Image source

You can add additional files to the build process with images. Input images are referenced in the same way the From and To image targets are defined. This means both container images and image stream tags can be referenced. In conjunction with the image, you must provide one or more path pairs to indicate the path of the files or directories to copy the image and the destination to place them in the build context.

The source path can be any absolute path within the image specified. The destination must be a relative directory path. At build time, the image is loaded and the indicated files and directories are copied into the context directory of the build process. This is the same directory into which the source repository content is cloned. If the source path ends in /. then the content of the directory is copied, but the directory itself is not created at the destination.

Image inputs are specified in the source definition of the BuildConfig:

source:
  git:
    uri: https://github.com/openshift/ruby-hello-world.git
    ref: "master"
  images: 

  - from: 

      kind: ImageStreamTag
      name: myinputimage:latest
      namespace: mynamespace
    paths: 

    - destinationDir: injected/dir 

      sourcePath: /usr/lib/somefile.jar 

  - from:
      kind: ImageStreamTag
      name: myotherinputimage:latest
      namespace: myothernamespace
    pullSecret: mysecret 

    paths:
    - destinationDir: injected/dir
      sourcePath: /usr/lib/somefile.jar

$ oc secrets link builder dockerhub