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exercises/containers/run_forest_run.md

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+## Run, Forest, Run!
+
+### Objective
+
+Learn what restart policies do and how to use them
+
+### Requirements
+
+Make sure Docker is installed on your system and the service is started
+
+```
+# Fedora/RHEL/CentOS
+rpm -qa | grep docker
+systemctl status docker
+```
+
+### Instructions
+
+1. Run a container with the following properties:
+  * image: alpine
+  * name: forest
+  * restart policy: always
+  * command to execute: sleep 15
+2. Run `docker container ls` - Is the container running? What about after 15 seconds, is it still running? why?
+3. How then can we stop the container from running?
+4. Remove the container you've created
+5. Run the same container again but this time with `sleep 600` and verify it runs
+6. Restart the Docker service. Is the container still running? why?
+8. Update the policy to `unless-stopped`
+9. Stop the container
+10. Restart the Docker service. Is the container running? why?

exercises/containers/solutions/run_forest_run.md

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+## Run, Forest, Run!
+
+### Objective
+
+Learn what restart policies do and how to use them
+
+### Requirements
+
+Make sure Docker is installed on your system and the service is started
+
+```
+# Fedora/RHEL/CentOS
+rpm -qa | grep docker
+systemctl status docker
+```
+
+### Instructions
+
+1. Run a container with the following properties:
+  * image: alpine
+  * name: forest
+  * restart policy: always
+  * command to execute: sleep 15
+
+`docker run --restart always --name forest alpine sleep 15`
+
+2. Run `docker container ls` - Is the container running? What about after 15 seconds, is it still running? why?
+
+
+It runs even after it completes to run `sleep 15` because the restart policy is "always". This means that Docker will keep restarting the **same** container even after it exists.
+
+
+3. How then can we stop the container from running?
+
+The restart policy doesn't apply when the container is stopped with the command `docker container stop`
+
+4. Remove the container you've created
+
+```
+docker container stop forest
+docker container rm forest
+```
+
+5. Run the same container again but this time with `sleep 600` and verify it runs
+
+```
+docker run --restart always --name forest alpine sleep 600
+docker container ls
+```
+
+6. Restart the Docker service. Is the container still running? why?
+
+```
+sudo systemctl restart docker
+```
+Yes, it's still running due to the restart policy `always` which means Docker will always bring up the container after it exists or stopped (not with the stop command).
+
+8. Update the policy to `unless-stopped`
+
+`docker update --restart unless-stopped forest`
+
+9. Stop the container
+
+`docker container stop forest`
+
+10. Restart the Docker service. Is the container running? why?
+
+```
+sudo systemctl restart docker
+```
+No, the container is not running. This is because we changed the policy to `unless-stopped` which will run the container unless it was in stopped status. Since before the restart we stopped the container, Docker didn't continue running it after the restart.

exercises/devops/containerize_app.md

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+## Containerize an Application
+
+1. Clone an open source project you would like to containerize. A couple of suggestions:
+
+```
+https://github.com/bregman-arie/node-hello-world
+https://github.com/bregman-arie/flask-hello-world
+```
+
+`git clone https://github.com/bregman-arie/node-hello-world`
+
+2. Write a Dockerfile you'll use for building an image of the application (you can use any base image you would like)
+
+```
+FROM alpine
+LABEL maintainer="your name/email"
+RUN apk add --update nodejs nodejs-npm
+COPY . /src
+WORKDIR /src
+RUN npm install
+EXPOSE 8080
+ENTRYPOINT ["node", "./app.js"]
+```