ci: add OneDev pipeline for build, test, and Docker images

Configure Build and Test and Docker Build jobs with branch and PR
triggers, plus a root .dockerignore to keep Docker contexts lean.

Co-authored-by: Cursor <cursoragent@cursor.com>

.dockerignore

@@ -0,0 +1,11 @@
+# Docker build context (workspace root) — keep images small and fast
+.git
+.nx
+node_modules
+.pnpm-store
+dist
+coverage
+apps/backend/target
+**/*.md
+.env
+.env.*

.onedev-buildspec.yml

@@ -0,0 +1,96 @@
+# OneDev CI/CD — CityGame monorepo
+# Docs: https://docs.onedev.io/category/cicd
+version: 47
+jobs:
+- name: Build and Test
+  steps:
+  - type: CheckoutStep
+    name: checkout
+    cloneCredential:
+      type: DefaultCredential
+    withLfs: false
+    withSubmodules: false
+    cloneDepth: 1
+    condition: SUCCESSFUL
+    optional: false
+  - type: CommandStep
+    name: build and test
+    runInContainer: true
+    image: node:20-bookworm
+    interpreter:
+      type: DefaultInterpreter
+      commands: |
+        set -e
+        set -o pipefail
+
+        apt-get update -qq
+        DEBIAN_FRONTEND=noninteractive apt-get install -y -qq openjdk-21-jdk-headless
+
+        corepack enable
+        corepack prepare pnpm@10.33.2 --activate
+
+        export CI=true
+        export NX_NO_CLOUD=true
+
+        pnpm install --frozen-lockfile
+
+        pnpm exec nx run-many -t build --parallel=2 --skip-nx-cache
+        pnpm exec nx run-many -t test --parallel=2 --skip-nx-cache
+    condition: SUCCESSFUL
+    optional: false
+  triggers:
+  - type: BranchUpdateTrigger
+    branches: main master develop feature/* release/* ci/*
+    userMatch: anyone
+  - type: PullRequestUpdateTrigger
+    branches: main master develop
+    userMatch: anyone
+  retryCondition: never
+  maxRetries: 2
+  retryDelay: 30
+  timeout: 3600
+- name: Docker Build
+  steps:
+  - type: CheckoutStep
+    name: checkout
+    cloneCredential:
+      type: DefaultCredential
+    withLfs: false
+    withSubmodules: false
+    cloneDepth: 1
+    condition: SUCCESSFUL
+    optional: false
+  - type: BuildImageStep
+    name: build frontend image
+    buildPath: .
+    dockerfile: apps/frontend/Dockerfile
+    output:
+      type: DockerLoadOutput
+      imageName: citygame-frontend:ci
+    platforms: linux/amd64
+    condition: SUCCESSFUL
+    optional: false
+  - type: BuildImageStep
+    name: build backend image
+    buildPath: .
+    dockerfile: apps/backend/Dockerfile
+    output:
+      type: DockerLoadOutput
+      imageName: citygame-backend:ci
+    platforms: linux/amd64
+    condition: SUCCESSFUL
+    optional: false
+  jobDependencies:
+  - jobName: Build and Test
+    requireSuccessful: true
+  triggers:
+  - type: BranchUpdateTrigger
+    branches: main master develop feature/* release/* ci/*
+    userMatch: anyone
+  - type: PullRequestUpdateTrigger
+    branches: main master develop
+    userMatch: anyone
+  retryCondition: never
+  maxRetries: 2
+  retryDelay: 30
+  timeout: 7200