Add Dockerfile and CI/CD yaml

Dockerfile

@@ -0,0 +1,15 @@
+FROM node:22-alpine
+
+WORKDIR /app
+
+COPY . .
+
+RUN npm install -g corepack
+
+RUN corepack enable
+
+RUN yarn install
+
+EXPOSE 10000
+
+CMD [ "yarn", "ts-node", "server.ts" ]

cloudbuild.yaml

@@ -0,0 +1,14 @@
+steps:
+  - name: "gcr.io/cloud-builders/docker"
+    args: ["build", "-t", "${_IMAGE_NAME}", "."]
+
+  - name: "gcr.io/cloud-builders/docker"
+    args: ["push", "${_IMAGE_NAME}"]
+
+substitutions:
+  _REPO: "us-docker.pkg.dev/${PROJECT_ID}/containers"
+  _PACKAGE: "harmony-rtc-server"
+  _IMAGE_NAME: "${_REPO}/${_PACKAGE}:${TAG_NAME}"
+
+options:
+  dynamic_substitutions: true