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To provide a Procfile or a .aptible.yml when using Direct Docker Image Deploy, you need to include these files in your Docker image at a pre-defined location:
  • The Procfile must be located at /.aptible/Procfile.
  • The .aptible.yml must be located at /.aptible/.aptible.yml.
Both of these files are optional: when you deploy directly from a Docker image, Aptible uses your image’s CMD to know which service command to run.

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Creating a suitable Docker Image

Here is how you can create those files in your Dockerfile, assuming you have files named Procfile and .aptible.yml at the root of your Docker build context: 
RUN mkdir /.aptible/
ADD Procfile /.aptible/Procfile
ADD .aptible.yml /.aptible/.aptible.yml
Note that if you are using docker build . to build your image, then the build context is the current directory.