feat: introduce nightly build workflow

.github/workflows/base-image-nightly.yml

@@ -0,0 +1,85 @@
+name: Build Base Image Nightly
+
+on:
+  #schedule:
+  #  - cron: '0 2 * * *'  # 2 AM UTC daily
+  workflow_dispatch:
+    inputs:
+      branch:
+        description: 'Branch to build from'
+        required: false
+        default: 'develop'
+        type: string
+
+permissions:
+  contents: read
+  id-token: write
+
+jobs:
+  build-base-image:
+    runs-on: blacksmith-4vcpu-ubuntu-2404-arm
+    timeout-minutes: 150
+
+    steps:
+      - name: Checkout Repo
+        uses: supabase/postgres/.github/actions/shared-checkout@HEAD
+        with:
+          ref: ${{ github.event.inputs.branch || 'develop' }}
+
+      - name: Configure AWS credentials
+        uses: aws-actions/configure-aws-credentials@v4
+        with:
+          role-to-assume: ${{ secrets.DEV_AWS_ROLE }}
+          aws-region: "us-east-1"
+          output-credentials: true
+          role-duration-seconds: 7200
+
+      - name: Install nix
+        uses: cachix/install-nix-action@v27
+        with:
+          install_url: https://releases.nixos.org/nix/nix-2.29.1/install
+          extra_nix_config: |
+            substituters = https://cache.nixos.org https://nix-postgres-artifacts.s3.amazonaws.com
+            trusted-public-keys = nix-postgres-artifacts:dGZlQOvKcNEjvT7QEAJbcV6b6uk7VF/hWMjhYleiaLI= cache.nixos.org-1:6NCHdD59X431o0gWypbMrAURkbJ16ZPMQFGspcDShjY=
+
+      - name: Set execution ID and timestamp
+        run: |
+          echo "EXECUTION_ID=${{ github.run_id }}-base-nightly" >> $GITHUB_ENV
+          echo "BUILD_TIMESTAMP=$(date -u +%Y%m%d-%H%M%S)" >> $GITHUB_ENV
+
+      - name: Build base stage 1 AMI
+        env:
+          AWS_MAX_ATTEMPTS: 10
+          AWS_RETRY_MODE: adaptive
+        run: |
+          GIT_SHA=${{ github.sha }}
+          nix run github:supabase/postgres/${GIT_SHA}#packer -- init amazon-arm64-nix.pkr.hcl
+          nix run github:supabase/postgres/${GIT_SHA}#packer -- build \
+            -var "git-head-version=${GIT_SHA}" \
+            -var "packer-execution-id=${EXECUTION_ID}" \
+            -var-file="development-arm.vars.pkr.hcl" \
+            -var "base-image-nightly=true" \
+            -var "build-timestamp=${BUILD_TIMESTAMP}" \
+            -var "region=us-east-1" \
+            -var 'ami_regions=["us-east-1","ap-southeast-1"]' \
+            amazon-arm64-nix.pkr.hcl
+
+      - name: Slack Notification on Failure
+        if: ${{ failure() }}
+        uses: rtCamp/action-slack-notify@v2
+        env:
+          SLACK_WEBHOOK: ${{ secrets.SLACK_NOTIFICATIONS_WEBHOOK }}
+          SLACK_USERNAME: 'gha-failures-notifier'
+          SLACK_COLOR: 'danger'
+          SLACK_MESSAGE: 'Building base image nightly failed'
+          SLACK_FOOTER: ''
+
+      - name: Cleanup resources after build
+        if: ${{ always() }}
+        run: |
+          aws ec2 --region us-east-1 describe-instances --filters "Name=tag:packerExecutionId,Values=${EXECUTION_ID}" --query "Reservations[].Instances[].InstanceId" --output text | xargs -r aws ec2 terminate-instances --region us-east-1 --instance-ids
+
+      - name: Cleanup resources on build cancellation
+        if: ${{ cancelled() }}
+        run: |
+          aws ec2 --region us-east-1 describe-instances --filters "Name=tag:packerExecutionId,Values=${EXECUTION_ID}" --query "Reservations[].Instances[].InstanceId" --output text | xargs -r aws ec2 terminate-instances --region us-east-1 --instance-ids