feat(ci): add workflow and script for pushing staging image

.github/workflows/deploy_staging.yml

@@ -0,0 +1,19 @@
+name: Deploy to Staging
+on:
+  push:
+    branches:
+      - staging
+
+jobs:
+  docker-image:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: serlo/configure-repositories/actions/setup-node@main
+      - uses: google-github-actions/auth@v2
+        with:
+          credentials_json: '${{ secrets.GCP_KEY_CONTAINER_REGISTRY }}'
+      - run: gcloud auth configure-docker
+      - uses: google-github-actions/setup-gcloud@v2
+      - run: yarn deploy:images:staging
+  # TODO: delete pod

package.json

@@ -27,6 +27,7 @@
     "check:unused-exports": "ts-unused-exports tsconfig.json --excludePathsFromReport=packages/types/ --excludePathsFromReport=packages/server/src/types.ts --ignoreFiles=/dist/",
     "codegen": "lerna run --stream codegen",
     "deploy:images": "lerna run --stream deploy:image",
+    "deploy:images:staging": "lerna run --stream deploy:image:staging",
     "docker:build": "run-s \"docker:build:*\"",
     "docker:build:server": "docker build -f packages/server/docker/server/Dockerfile -t api-server-local-build:latest .",
     "docker:build:swr-queue-worker": "docker build -f packages/server/docker/swr-queue-worker/Dockerfile -t api-swr-queue-worker-local-build:latest .",

packages/server/package.json

@@ -14,7 +14,8 @@
     "build:server": "yarn _build --format cjs --target node --entry src/server.ts",
     "build:swr-queue-worker": "yarn _build --format cjs --target node --entry src/swr-queue-worker.ts",
     "codegen": "graphql-codegen --config codegen.yml",
-    "deploy:image": "ts-node --experimental-specifier-resolution=node scripts/deploy"
+    "deploy:image": "ts-node --experimental-specifier-resolution=node scripts/deploy",
+    "deploy:image:staging": "ts-node --experimental-specifier-resolution=node scripts/deploy-staging"
   },
   "dependencies": {
     "bee-queue": "^1.7.1"

packages/server/scripts/deploy-staging.ts

@@ -0,0 +1,67 @@
+import { spawnSync } from 'node:child_process'
+import * as path from 'node:path'
+import { fileURLToPath } from 'node:url'
+
+
+const __dirname = path.dirname(fileURLToPath(import.meta.url))
+
+const root = path.join(__dirname, '..')
+
+void run()
+
+function run() {
+  buildDockerImage({
+    name: 'api-server',
+    Dockerfile: path.join(root, 'docker', 'server', 'Dockerfile'),
+    context: '../..',
+    envName: 'staging'
+  })
+  buildDockerImage({
+    name: 'api-swr-queue-worker',
+    Dockerfile: path.join(root, 'docker', 'swr-queue-worker', 'Dockerfile'),
+    context: '../..',
+    envName: 'staging'
+  })
+}
+
+function buildDockerImage({
+  name,
+  Dockerfile,
+  context,
+  envName
+}: DockerImageOptions) {
+  const remoteName = `eu.gcr.io/serlo-shared/${name}`
+  const date = new Date
+  const timestamp = `${date.toISOString().split('T')[0]}-${date.getTime()}`
+
+  const {stdout: gitHash} = spawnSync(
+    'git',
+    ['rev-parse', '--short', 'HEAD'],
+  )
+
+  const remoteTags = toTags(remoteName, [envName, timestamp, gitHash.toString()])
+  const tags = [...remoteTags, ...toTags(name, [envName])]
+
+  spawnSync(
+    'docker',
+    ['build', '-f', Dockerfile, ...tags.flatMap((tag) => ['-t', tag]), context],
+    { stdio: 'inherit' },
+  )
+
+  remoteTags.forEach((remoteTag) => {
+    // eslint-disable-next-line no-console
+    console.log('Pushing', remoteTag)
+    spawnSync('docker', ['push', remoteTag], { stdio: 'inherit' })
+  })
+}
+
+function toTags(name: string, versions: string[]) {
+  return versions.map((version) => `${name}:${version}`)
+}
+
+interface DockerImageOptions {
+  name: string
+  Dockerfile: string
+  context: string
+  envName: 'staging' | 'production'
+}