75-github-actions.sh

# Source: https://gist.github.com/181614ae807a0cb961271b11bbd18d63

######################################
# Github Actions review and tutorial #
# https://youtu.be/eZcAvTb0rbA       # 
######################################

# Referenced videos:
# - GitHub CLI - How to use manage repositories more efficiently: https://youtu.be/BII6ZY2Rnlc
# - Continuous integration, delivery, deployment, and testing explained: https://youtu.be/0ivcSjpUzl4
# - K3d - How to run Kubernetes cluster locally using Rancher k3s: https://youtu.be/mCesuGk-Fks
# - Kustomize - How to Simplify Kubernetes Configuration Management: https://youtu.be/Twtbg6LFnAg

#########
# Setup #
#########

# Create a Kubernetes cluster with NGINX Ingress

gh repo fork vfarcic/github-actions-demo \
    --clone

cd github-actions-demo

# Replace `[...]` with the Docker Hub token
export DOCKERHUB_TOKEN=[...]

# Replace `[...]` with the Docker Hub user
export DOCKERHUB_USERNAME=[...]

gh secret set \
    DOCKERHUB_TOKEN -b$DOCKERHUB_TOKEN

gh secret set \
    DOCKERHUB_USERNAME -b$DOCKERHUB_USERNAME

# Replace the value with the path to Kube config
export KUBECONFIG_PATH=~/.kube/config

gh secret set KUBE_CONFIG < $KUBECONFIG_PATH

# Replace `[...]` with the external IP of the Ingress service
export INGRESS_HOST=[...]

cat kustomize/base/ingress.yaml \
    | sed -e "s@acme.com@devops-toolkit.$INGRESS_HOST.nip.io@g" \
    | tee kustomize/overlays/production/ingress.yaml

kubectl create namespace production

gh repo view --web

# Select the *Actions* tab and click the *I understand my workflows, go ahead and enable them*.

###################################
# Exploring GitHub Actions syntax #
###################################

git checkout -b my-feature

echo "Is this a feature?" \
    | tee something.txt

git add .

git commit -m "My feature"

git push --set-upstream origin my-feature

cat Dockerfile

cat .github/workflows/pr.yaml

##########################
# Running GitHub Actions #
##########################

gh pr create \
    --title "My feature" \
    --body "Read the title"

# Open the address from the output

#############################
# Exploring other scenarios #
#############################

cat .github/workflows/main.yaml

# If using a Kubernetes platform that references additional tools in Kube config (e.g., GKE needs `gcloud` and EKS requires the authenticator), you might need to use a more specific step instead of `azure/k8s-set-context@v1`

# Open https://github.com/marketplace?type=actionsclear

gh pr merge

echo http://devops-toolkit.$INGRESS_HOST.nip.io

# Open it