Azure - Deploy Preview Environment (public) #452
Workflow file for this run
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name: Azure - Deploy Preview Environment (public) | |
# NOTE! This is specifically and only for github/docs. | |
# **What it does**: Build and deploy an Azure preview environment for this PR in github/docs | |
# **Why we have it**: It's our preview environment deploy mechanism, to docs public repo | |
# **Who does it impact**: All open source contributors. | |
# !!! | |
# ! This worflow has access to secrets, runs in the public repository, and clones untrusted user code. | |
# ! Modify with extreme caution | |
# !!! | |
on: | |
pull_request_target: | |
# Note that if someone makes a PR that touches `Dockerfile` | |
# and `content/index.md`, this use of `paths` will still run. | |
# It would run even if we appended `- '!Dockerfile'` to the list. | |
# But if someone makes a PR that touches `Dockerfile` only, the | |
# workflow will not run. | |
paths: | |
- 'content/**' | |
- 'data/**' | |
- 'assets/**' | |
merge_group: | |
permissions: | |
contents: read | |
deployments: write | |
# This allows one deploy workflow to interrupt another | |
concurrency: | |
group: 'preview-env @ ${{ github.head_ref || github.run_id }} for ${{ github.event.number || inputs.PR_NUMBER }}' | |
cancel-in-progress: true | |
jobs: | |
build-and-deploy-azure-preview-public: | |
name: Build and deploy Azure preview environment (public) | |
runs-on: ubuntu-latest | |
if: github.repository == 'github/docs' | |
timeout-minutes: 15 | |
environment: | |
name: preview-env-${{ github.event.number }} | |
# The environment variable is computer later in this job in | |
# the "Get preview app info" step. | |
# That script sets environment variables which is used by Actions | |
# to link a PR to a list of environments later. | |
url: ${{ env.APP_URL }} | |
env: | |
PR_NUMBER: ${{ github.event.number || github.run_id }} | |
COMMIT_REF: ${{ github.event.pull_request.head.sha }} | |
BRANCH_NAME: ${{ github.head_ref || github.ref_name }} | |
NONPROD_REGISTRY_USERNAME: ghdocs | |
steps: | |
- name: 'Az CLI login' | |
uses: azure/login@6c251865b4e6290e7b78be643ea2d005bc51f69a # pin @v2 | |
with: | |
creds: ${{ secrets.NONPROD_AZURE_CREDENTIALS }} | |
- name: 'Docker login' | |
uses: azure/docker-login@15c4aadf093404726ab2ff205b2cdd33fa6d054c | |
with: | |
login-server: ${{ secrets.NONPROD_REGISTRY_SERVER }} | |
username: ${{ env.NONPROD_REGISTRY_USERNAME }} | |
password: ${{ secrets.NONPROD_REGISTRY_PASSWORD }} | |
- name: Set up Docker Buildx | |
uses: docker/setup-buildx-action@d70bba72b1f3fd22344832f00baa16ece964efeb | |
- name: Check out main branch | |
uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4.1.1 | |
with: | |
ref: 'main' | |
persist-credentials: 'false' | |
- name: Get preview app info | |
env: | |
APP_NAME_SEED: ${{ secrets.PREVIEW_ENV_NAME_SEED }} | |
run: src/workflows/get-preview-app-info.sh | |
- name: 'Set env vars' | |
run: | | |
# Image tag is unique to each workflow run so that it always triggers a new deployment | |
echo "DOCKER_IMAGE=${{ secrets.NONPROD_REGISTRY_SERVER }}/${IMAGE_REPO}:${{ env.COMMIT_REF }}-${{ github.run_number }}-${{ github.run_attempt }}" >> $GITHUB_ENV | |
- name: Check out user code to temp directory | |
uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4.1.1 | |
with: | |
path: ./user-code | |
ref: ${{ env.COMMIT_REF }} | |
# Move acceptable user changes into our main branch checkout | |
- name: Move acceptable user changes | |
run: | | |
# Make sure recursive path expansion is enabled | |
shopt -s globstar | |
rsync -rptovR ./user-code/content/./**/*.md ./content | |
rsync -rptovR ./user-code/assets/./**/*.png ./assets | |
rsync -rptovR ./user-code/data/./**/*.{yml,md} ./data | |
- uses: ./.github/actions/warmup-remotejson-cache | |
with: | |
restore-only: true | |
- uses: ./.github/actions/precompute-pageinfo | |
with: | |
restore-only: true | |
# In addition to making the final image smaller, we also save time by not sending unnecessary files to the docker build context | |
- name: 'Prune for preview env' | |
run: src/workflows/prune-for-preview-env.sh | |
- name: 'Build and push image' | |
uses: docker/build-push-action@1a162644f9a7e87d8f4b053101d1d9a712edc18c | |
with: | |
context: . | |
push: true | |
target: preview | |
tags: ${{ env.DOCKER_IMAGE }} | |
# we only pull the `main` cache image | |
cache-from: type=registry,ref=${{ secrets.NONPROD_REGISTRY_SERVER }}/${{ github.repository }}:main-preview | |
# `main-docker-cache.yml` handles updating the remote cache so we don't pollute it with PR specific code | |
cache-to: '' | |
build-args: | | |
BUILD_SHA=${{ env.COMMIT_REF }} | |
# Succeed despite any non-zero exit code (e.g. if there is no deployment to cancel) | |
- name: 'Cancel any existing deployments for this PR' | |
run: | | |
az deployment group cancel --name ${{ env.DEPLOYMENT_NAME }} -g ${{ secrets.PREVIEW_ENV_RESOURCE_GROUP }} || true | |
# Deploy ARM template is idempotent | |
# Note: once the resources exist the image tag must change for a new deployment to occur (the image tag includes workflow run number, run attempt, as well as sha) | |
- name: Run ARM deploy | |
uses: azure/arm-deploy@a1361c2c2cd398621955b16ca32e01c65ea340f5 | |
with: | |
scope: resourcegroup | |
resourceGroupName: ${{ secrets.PREVIEW_ENV_RESOURCE_GROUP }} | |
subscriptionId: ${{ secrets.NONPROD_SUBSCRIPTION_ID }} | |
template: ./src/workflows/azure-preview-env-template.json | |
deploymentName: ${{ env.DEPLOYMENT_NAME }} | |
parameters: appName="${{ env.APP_NAME }}" | |
containerImage="${{ env.DOCKER_IMAGE }}" | |
dockerRegistryUrl="${{ secrets.NONPROD_REGISTRY_SERVER }}" | |
dockerRegistryUsername="${{ env.NONPROD_REGISTRY_USERNAME }}" | |
dockerRegistryPassword="${{ secrets.NONPROD_REGISTRY_PASSWORD }}" | |
- name: Check that it can be reached | |
# This introduces a necessary delay. Because the preview evironment | |
# URL is announced to the pull request as soon as all the steps | |
# finish, what sometimes happens is that a viewer of the PR clicks | |
# that link too fast and are confronted with a broken page. | |
# It's because there's a delay between the `azure/arm-deploy` | |
# and when the server is actually started and can receive and | |
# process requests. | |
# By introducing a slight "delay" here we avoid announcing a | |
# preview environment URL that isn't actually working just yet. | |
# Note the use of `--fail`. It which means that if it actually | |
# did connect but the error code was >=400, the command will fail. | |
# The `--fail --retry N` combination means that a 4xx response | |
# code will exit immediately but a 5xx will exhaust the retries. | |
run: curl --fail --retry-connrefused --retry 5 -I ${{ env.APP_URL }} |