[MS-670] ci: Add build action

.github/workflows/build.yml

@@ -0,0 +1,47 @@
+name: Build
+
+on:
+  push:
+    tags:
+      - "*"
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    permissions:
+      id-token: write
+      contents: read
+    env:
+      AWS_DEFAULT_REGION: eu-central-1
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Install pnpm
+        uses: pnpm/action-setup@v4
+        with:
+          version: 9.10.0
+          run_install: false
+
+      - name: Use Node.js ${{ matrix.node-version }}
+        uses: actions/setup-node@v4
+        with:
+          node-version: 20
+          cache: "pnpm"
+
+      - name: Install dependencies
+        run: pnpm --version && pnpm install --frozen-lockfile
+
+      - name: Build zip
+        run: bash etc/command/build.sh
+
+      - name: Configure AWS credentials
+        uses: aws-actions/configure-aws-credentials@master
+        with:
+          role-to-assume: arn:aws:iam::414357773561:role/github-actions/mirumee_nimara-mailer
+          aws-region: eu-central-1
+
+      - name: Copy ZIP
+        run: aws s3 cp artifact.zip s3://marina-artifacts/lambda/lambda-mailer-${{ env.GIT_DESCRIBE }}.zip --quiet
+
+      - name: ZIP tag
+        run: echo "${{ env.GIT_DESCRIBE }}"