4. Extend the Standard Runtime Dockerfile

Back in Step 2 you saw that the SDK created a Dockerfile for you. In this step, you'll modify the Dockerfile adding a command that installs the fortunes program in your runtime environment, and your Python code will call fortune to create a more interesting message.

Edit the project files

Dockerfile

Use the ADD command to install the fortunes binary. Add one new line to your Dockerfile:

main.py

Because you are running Python in a VM, your code is able to:

• Import subprocess
• Use subprocess to call the fortune binary to generate a message

Test and deploy

Run locally

$ gcloud preview app run ./app.yaml

And visit http://localhost:8080/. Reload the page a few times, then try http://localhost:8080/messages.

Deploy to the cloud

$ gcloud preview app deploy ./app.yaml

Point your browser at your appspot address (http://<your-app-id>.appspot.com/). Reload the page a few times, then try http://<your-app-id>.appspot.com/messages.

Next

In the next step you'll push the boundaries of your Dockerfile further and install the Flask template language.

Go to Step 5

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