Google Cloud Platform demo of Artifact Registry deployment and Cloud Run app

artifact-registry-cloud-run-demo.sh

#!/usr/bin/env bash

export PROJECT_ID=$(gcloud config get-value project)
export PROJECT_USER=$(gcloud config get-value core/account) # set current user
export PROJECT_NUMBER=$(gcloud projects describe $PROJECT_ID --format="value(projectNumber)")
export IDNS=${PROJECT_ID}.svc.id.goog # workflow identity domain

export GCP_REGION="us-east1" # CHANGEME (OPT)
export GCP_ZONE="us-east1-c" # CHANGEME (OPT)
export NETWORK_NAME="default"

# enable apis
gcloud services enable compute.googleapis.com \
    artifactregistry.googleapis.com \
    cloudbuild.googleapis.com \
    storage.googleapis.com \
    run.googleapis.com

# set defaults
gcloud config set compute/region $GCP_REGION
gcloud config set compute/zone $GCP_ZONE

# create repository
export REPO_NAME=team1

gcloud artifacts repositories create $REPO_NAME \
    --repository-format=docker \
    --location=$GCP_REGION \
    --description="Docker repository"

# configure auth
gcloud auth configure-docker ${GCP_REGION}-docker.pkg.dev


############################################################
# push a test image to the repo 
############################################################
export TEST_IMAGE="us-docker.pkg.dev/google-samples/containers/gke/hello-app:1.0"
export IMAGE_NAME="hello-app"
export TAG_NAME="tag1"

docker pull $TEST_IMAGE
docker tag $TEST_IMAGE \
    ${GCP_REGION}-docker.pkg.dev/${PROJECT_ID}/${REPO_NAME}/${IMAGE_NAME}:${TAG_NAME}
docker push ${GCP_REGION}-docker.pkg.dev/${PROJECT_ID}/${REPO_NAME}/${IMAGE_NAME}:${TAG_NAME}


###########################################################
# Hello demo app with Dockerfile
###########################################################
export IMAGE_NAME2="hello-go"
export TAG_NAME2="tag2"
export SERVICE_NAME="hello-service"

# create app
cat > main.go << EOF
package main

import (
        "fmt"
        "log"
        "net/http"
        "os"
)

func main() {
        // register hello function to handle all requests
        mux := http.NewServeMux()
        mux.HandleFunc("/", hello)

        // use PORT environment variable, or default to 8080
        port := os.Getenv("PORT")
        if port == "" {
                port = "8080"
        }

        // start the web server on port and accept requests
        log.Printf("Server listening on port %s", port)
        log.Fatal(http.ListenAndServe(":"+port, mux))
}

// hello responds to the request with a plain-text "Hello, world" message.
func hello(w http.ResponseWriter, r *http.Request) {
        log.Printf("Serving request: %s", r.URL.Path)
        host, _ := os.Hostname()
        fmt.Fprintf(w, "Hello, world!\n")
        fmt.Fprintf(w, "Version: 1.0.0\n")
        fmt.Fprintf(w, "Hostname: %s\n", host)
}
EOF

# create Dockerfile
cat > Dockerfile << EOF
FROM golang:1.8-alpine
ADD . /go/src/hello-app
RUN go install hello-app

FROM alpine:latest
COPY --from=0 /go/bin/hello-app .
ENV PORT 8080
CMD ["./hello-app"]
EOF

# build / push image to artifact registry (using local Dockerfile)
gcloud builds submit --tag ${GCP_REGION}-docker.pkg.dev/${PROJECT_ID}/${REPO_NAME}/${IMAGE_NAME2}:${TAG_NAME2}

# deploy app to Cloud Run
gcloud run deploy $SERVICE_NAME \
    --platform managed \
    --region $GCP_REGION \
    --allow-unauthenticated \
    --image ${GCP_REGION}-docker.pkg.dev/${PROJECT_ID}/${REPO_NAME}/${IMAGE_NAME2}:${TAG_NAME2}

# confirm service is running
gcloud run services list \
    --platform managed \
    --region $GCP_REGION

# test URL
export SVC_URL=$(gcloud run services describe $SERVICE_NAME --platform managed --region $GCP_REGION --format="value(status.url)")

curl -X GET $SVC_URL
# Hello, world!
# Version: 1.0.0
# Hostname: localhost