Added labs Readme files

Author: guybarrette

L03-03 Cloud Native/Readme.md

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+# L03-03
+
+Head over to the [CNCF Web site](https://cncf.io) (cncf.io)
+
+## Explore the various projects
+
+Look at the Sandbox, Incubating and Graduated projects (Projects menu).
+
+## Explore the Trail Map
+
+Look at the Trail Map  (Projects/Cloud Native Trail Map menu).
+
+## Explore the Landscape diagram
+
+From the Trail Map page, click on the Landscape link of use the Projects/Interactive Landscape menu on the CNCF Web site.

L04-03 Docker/Readme.md

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+# L04-03
+
+Let’s make sure that Docker Desktop is running.
+
+If not already installed, head to the Docker site (https://www.docker.com/get-started), download and install it.
+
+## Open the Docker Desktop Dashboard
+
+On Windows, locate the system tray icon and select Dashboard.
+
+On Mac, the icon will be located in the menu bar.
+
+## Signin with your Docker account
+
+Make sure you signed in to your Docker account.
+
+## Enable Kubernetes
+
+Kubernetes can run locally in Docker Desktop.
+
+* Click on the **Settings icon** (gear) in the top right of the window.
+
+* Select **Kubernetes**.
+
+* Check **Enable Kubernetes**.

L05-02 Basic Commands/Readme.md

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+# L05-02
+
+Open a command prompt/terminal or use built-in terminal in Code using the **Terminal/New Terminal** menu or the **Ctrl-Shift-`** shortcut (that's a backtick).
+
+Type the following Docker commands:
+
+## Displays system information
+
+    docker info
+
+## Displays the system’s version
+
+    docker version
+
+## Log in to Docker Hub
+
+    docker login

L05-04 Running Containers/Readme.md

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+# L05-04
+
+Type the following Docker commands:
+
+## Pull and run a Nginx server
+
+    docker run -d -p 8080:80 --name webserver nginx
+
+## List the running containers
+
+    docker ps
+
+## List the images
+
+    docker images
+
+## Attach to the container
+
+    docker container exec -it  webserver bash  
+
+Exit by typing
+
+    exit
+
+## Stop the container
+
+    docker stop webserver
+
+## Remove the container from memory
+
+    docker rm webserver
+
+## Remove the image
+
+    docker rmi nginx

L05-06 Build an image/Readme.md

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+# L05-06
+
+We want to containerize a simple HTML page.  To do that you’ll need to create a Dockerfile.
+
+## Add a Dockerfile file
+
+Add a new file and name it **Dockerfile** (without any file extension).
+
+Copy and paste the following in the file and save it:
+
+    FROM nginx:alpine
+    COPY index.html /usr/share/nginx/html
+
+## Build the image
+
+    docker build -t hello-world:v1 .
+
+## list the images
+
+    docker images
+
+## Let's create an instance of the image
+
+    docker run -d -p 8080:80 --name hello hello-world:v1
+
+## List the containers running
+
+    docker ps
+
+## Display the page using curl
+
+    curl localhost:8080
+
+or use your browser. Navigate to https://localhost:8080
+
+## Stop the container
+
+Refresh the browser to confirm that it has stopped
+
+    docker stop hello
+
+## List the containers running
+
+You should not see the hello-world:v1 instance anymore.
+
+    docker ps
+
+## Remove the instance from memory
+
+    docker rm hello
+
+## Confirm that the container is no longer running
+
+    docker ps
+
+## Is the image still present?
+
+    docker images
+
+## Delete the image
+
+    docker rmi hello-world:v1

L06-02 Using VS Code/Readme.md

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+# L06-02
+
+This time, we'll containerize an Express app.  To do that you’ll need to create a Dockerfile.  The Express app files are located in the lab's folder.
+
+## Add a Dockerfile file
+
+Using the Code tooling, add a new Dockerfile by opening the Command Palette from the View menu.
+
+Type **Docker Add** and select **Docker Add Docker Files to Workspace**.
+
+## Build the image using Code
+
+Open the Command Palette again and issue a **Docker Build**. Code will use the first part of the folder name as the tag. In this case: 04:latest.  Not ideal but you can issue a **Docker Tag** to tag the image with something more useful like express:latest.
+
+## Run an instance using Code
+
+Open the Command Palette again and issue a **Docker Run**.
+
+Point your browser to http://localhost:3000
+
+## List the containers running
+
+Click on the Docker icon in the left menu.  You'll be able to see the imahe you just built and the instance that is running.
+
+## Stop the instance
+
+Right click on the instance name and stop it.
+
+## Remove the image
+
+Right click on the image name and delete it.

L07-02 Multi Stage Build/Readme.md

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+# L07-02
+
+This time, we'll containerize an .NET Core app.
+
+## Generate the project
+
+The project is already located in the lab's folder.  It was created using this command:
+
+    dotnet new webapp
+
+## Build the image
+
+The Dockerfile is already created.
+
+In the terminal, type the following commands:
+
+    docker build -t dotnetwebapp:latest .
+
+## Run an instance
+
+    docker run -d -p 8080:5289 --name webapp dotnetwebapp:latest
+
+## List the containers running
+
+    docker ps
+
+## Display using the app
+
+Point your browser to http://localhost:8080
+
+## Cleanup
+
+    docker stop webapp
+    docker rm webapp
+    docker rmi dotnetwebapp:latest

L08-03 Docker Volumes/Readme.md

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+# L08-03
+
+## Open a terminal and create a volume
+
+    docker volume create myvol
+
+## List the volumes
+
+    docker volume ls
+
+## Run a Nginx container that will use the volume
+
+    docker run -d --name voltest -v myvol:/app nginx:latest
+
+## Connect to the instance
+
+    docker exec -it voltest bash
+
+## Let’s create a file in the volume using Nano
+
+    apt-get update
+    apt-get install nano
+
+## Create a file in the app folder
+    cd app
+    nano test.txt
+
+Type something, save the file and exit Nano using:
+
+    CTRL-O
+    CTRL-X
+
+Detach from the instance:
+
+    exit
+
+## Stop and remove the container
+
+    docker stop voltest
+    docker rm voltest
+
+## Run it again and see if the file still exists
+
+    docker run -d --name voltest -v myvol:/app nginx:latest
+    docker exec -it voltest bash
+    cd app
+    cat test.txt
+
+## Cleanup
+
+    docker volume rm myvol
+    docker stop voltest
+    docker rm voltest

L09-04 Docker Compose/Readme.md

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+# L09-04
+
+## Build the app
+
+    docker compose build
+
+## Run the app
+
+    docker compose up -d
+
+When the app will run, launch the voting app in your browser http://localhost:5000
+
+
+## List the containers
+
+    docker compose ps
+
+## Look at the db container logs
+
+    docker compose logs -f web-fe
+
+
+## Compose V2 commands
+
+LS will list the current projects
+
+    docker compose ls
+
+## Let's try to deploy a second version
+
+    docker compose up -d
+
+This fails because we can only run an app a single time
+
+## Deploy a second version using a different project name
+
+Let's now use a project name to see if we can deploy a second version
+
+    docker compose -p test up -d
+
+This fails because the localhost port 5000 is already assigned.
+
+Change the ports value from
+
+    - "5000:80"
+
+to
+
+    - "5001:80"
+
+## Deploy again
+
+    docker compose -p test up -d
+
+How many versions do we have running?
+
+    docker compose ls
+
+## Cleanup
+
+    docker compose down
+    docker compose ls
+    docker compose -p test down
+    docker compose ls