chore(ci): update cd workflows for arm64 (#1838)

## Problem

Currently we only deploy amd64 badger CLI tool builds. We would like
arm64 builds too.

## Solution

Use an arm64 self-hosted runner to build arm64 badger CLI tool.

.github/workflows/cd-badger.yml

@@ -1,7 +1,7 @@
 name: cd-badger
 on: workflow_dispatch
 jobs:
-  badger-build:
+  badger-build-amd64:
     runs-on: ubuntu-20.04
     steps:
       - uses: actions/checkout@v3
@@ -42,3 +42,44 @@ jobs:
           path: |
             badger/badger-checksum-linux-amd64.sha256
             badger/badger-linux-amd64.tar.gz
+  badger-build-arm64:
+    runs-on: [self-hosted, ARM64]
+    steps:
+      - uses: actions/checkout@v3
+      - name: Get Go Version
+        run: |
+          #!/bin/bash
+          GOVERSION=$({ [ -f .go-version ] && cat .go-version; })
+          echo "GOVERSION=$GOVERSION" >> $GITHUB_ENV
+      - name: Set up Go
+        uses: actions/setup-go@v3
+        with:
+          go-version: ${{ env.GOVERSION }}
+      - name: Set Badger Release Version
+        run: |
+          #!/bin/bash
+          GIT_BRANCH_NAME=$(git rev-parse --abbrev-ref HEAD)
+          if [[ "$GIT_BRANCH_NAME" == "release/v"* ]]; 
+          then
+            echo "this is a release branch"
+          else
+            echo "this is NOT a release branch"
+            exit 1
+          fi
+          BADGER_RELEASE_VERSION=$(git rev-parse --abbrev-ref HEAD | sed  's/release\///')
+          echo "making a new release for "$BADGER_RELEASE_VERSION
+          echo "BADGER_RELEASE_VERSION=$BADGER_RELEASE_VERSION" >> $GITHUB_ENV
+      - name: Fetch dependencies
+        run: sudo apt-get -y install build-essential
+      - name: Build badger linux/arm64
+        run: make badger
+      - name: Generate SHA for Linux Build
+        run: cd badger && sha256sum badger-linux-arm64 | cut -c-64 > badger-checksum-linux-arm64.sha256
+      - name: Tar Archive for Linux Build
+        run: cd badger && tar -zcvf badger-linux-arm64.tar.gz badger-linux-arm64
+      - name: Upload Badger Binary Build Artifacts
+        uses: actions/upload-artifact@v3
+        with:
+          path: |
+            badger/badger-checksum-linux-arm64.sha256
+            badger/badger-linux-arm64.tar.gz

contrib/README.md

@@ -0,0 +1,18 @@
+# GH Actions Runner
+
+How to bake an AWS Virtual Machine for GH Actions?
+
+1. Get a Github Actions Runner Token from the UI
+```
+export TOKEN=<GITHUB ACTIONS RUNNER TOKEN>
+```
+2. Download the setup script onto the machine
+```
+wget https://raw.githubusercontent.com/dgraph-io/badger/main/contrib/gh-runner/gh-runner.sh
+```
+3. Run the script to attach this machine to Github Actions Runner Pool
+```
+sh gh-runner.sh
+```
+NOTE: This script is based on a similar [script](https://github.com/dgraph-io/dgraph/tree/main/contrib/gh-runner) located in the dgraph repository.
+

contrib/gh-runner.sh

@@ -0,0 +1,32 @@
+#!/bin/bash
+# Machine Setup
+sudo apt-get update
+sudo apt-get -y upgrade
+sudo apt-get -y install build-essential #Libc packages
+# Install & Setup GH Actions Runner
+mkdir actions-runner && cd actions-runner
+if [ "$(uname -m)" = "aarch64" ]; then
+    echo "Detected arm64 architecture"
+    # Download the latest runner package
+    curl -o actions-runner-linux-arm64-2.299.1.tar.gz -L https://github.com/actions/runner/releases/download/v2.299.1/actions-runner-linux-arm64-2.299.1.tar.gz
+    # Optional: Validate the hash
+    echo "debe1cc9656963000a4fbdbb004f475ace5b84360ace2f7a191c1ccca6a16c00  actions-runner-linux-arm64-2.299.1.tar.gz" | shasum -a 256 -c
+    # Extract the installer
+    tar xzf ./actions-runner-linux-arm64-2.299.1.tar.gz
+elif [ "$(uname -m)" = "x86_64" ]; then
+    echo "Detected amd64 architecture"
+    # Download the latest runner package
+    curl -o actions-runner-linux-x64-2.299.1.tar.gz -L https://github.com/actions/runner/releases/download/v2.299.1/actions-runner-linux-x64-2.299.1.tar.gz
+    # Optional: Validate the hash
+    echo "147c14700c6cb997421b9a239c012197f11ea9854cd901ee88ead6fe73a72c74  actions-runner-linux-x64-2.299.1.tar.gz" | shasum -a 256 -c
+    # Extract the installer
+    tar xzf ./actions-runner-linux-x64-2.299.1.tar.gz
+else
+    echo "Unrecognized architecture"
+    exit 1
+fi
+# Create the runner and start the configuration experience
+./config.sh --url https://github.com/dgraph-io/badger --token $TOKEN
+# Start GH Actions
+sudo ./svc.sh install
+sudo ./svc.sh start