まず

gcloud init

gcloud services enable artifactregistry.googleapis.com cloudbuild.googleapis.com run.googleapis.com

gcloud artifacts repositories create my-repo \
  --repository-format=docker \
  --location=asia-northeast1  \
  --description="Docker repository for Cloud Run"

次にPHPファイルとDocekerfileとcloudbuild.yamlを用意

index.php

<?php
echo "Hello, Artifact Registry and Cloud Run!";

Dockerfile.yaml

FROM php:8.2-apache

# Set the working directory inside the container
WORKDIR /var/www/html

# Copy application files to the container
COPY . /var/www/html

# Expose port 8080
EXPOSE 8080

# Update the Apache configuration to listen on port 8080
RUN sed -i 's/80/8080/' /etc/apache2/ports.conf \
    && sed -i 's/:80/:8080/' /etc/apache2/sites-available/000-default.conf

# Install additional PHP extensions if needed
RUN docker-php-ext-install pdo pdo_mysql

# Enable Apache mod_rewrite if needed
RUN a2enmod rewrite

# Restart Apache
CMD ["apache2-foreground"]

cloudbuild.yaml

steps:
  # Dockerイメージをビルド
  - name: 'gcr.io/cloud-builders/docker'
    args: [
      'build', '-t',
      'asia-northeast1-docker.pkg.dev/$PROJECT_ID/my-repo/php-cloud-run-example',
      '.'
    ]

  # DockerイメージをArtifact Registryにプッシュ
  - name: 'gcr.io/cloud-builders/docker'
    args: [
      'push',
      'asia-northeast1-docker.pkg.dev/$PROJECT_ID/my-repo/php-cloud-run-example'
    ]

  # Cloud Runにデプロイ
  - name: 'gcr.io/cloud-builders/gcloud'
    args: [
      'run', 'deploy', 'php-cloud-run-example',
      '--image',
      'asia-northeast1-docker.pkg.dev/$PROJECT_ID/my-repo/php-cloud-run-example',
      '--region', 'asia-northeast1',
      '--platform', 'managed',
      '--allow-unauthenticated'
    ]

images:
  - 'asia-northeast1-docker.pkg.dev/$PROJECT_ID/my-repo/php-cloud-run-example'

あとは
gcloud config set project プロジェクト名

gcloud builds submit --config cloudbuild.yaml .

これでbuild実行！！