Built Racket BC installer in CI, upload to S3.

.github/workflows/ci-push.yml

@@ -619,3 +619,50 @@ jobs:
       with:
         name: scanbuild-cs-${{ github.sha }}
         path: racketcs-report-${{ github.sha }}.tar.bz2
+        
+  create-installer3m:        
+    runs-on: ubuntu-18.04
+      
+    steps:
+    - uses: actions/checkout@v1
+      with:
+        fetch-depth: 10
+    - name: Install pkg dependencies
+      run: |
+        sudo apt update
+        sudo apt install -y libffi-dev unzip python libxml2-dev libfindbin-libs-perl make gcc g++ git uuid-dev
+    - uses: Bogdanp/setup-racket@v0.7
+      with:
+          architecture: 'x64'
+          distribution: 'full'
+          variant: 'regular'
+          version: 'current'
+          
+    - name: Create site.rkt
+      run: |
+        which racket
+        echo "#lang distro-build/config" > ${{ runner.temp }}/site.rkt
+        echo "(machine #:racket \"/usr/bin/racket\" #:versionless? #true #:pkgs (list))" >> ${{ runner.temp }}/site.rkt
+        cat ${{ runner.temp }}/site.rkt
+    - name: Building
+      run: |
+        export cpus=$(grep -c ^processor /proc/cpuinfo)
+        make installers RACKET=/usr/bin/racket CONFIG="${{ runner.temp }}/site.rkt" -j $((cpus+1))
+        mv bundle/ ${{ github.sha }}/
+    - uses: actions/upload-artifact@v1
+      if: always()
+      with:
+        name: racket3m-installer-${{ github.sha }}
+        path: ${{ github.sha }}/racket-x86_64-linux.sh
+
+
+    - name: S3 Sync
+      uses: jakejarvis/s3-sync-action@v0.5.1
+      with:
+        args: --acl public-read --exclude '*' --include '${{ github.sha }}/racket-x86_64-linux.sh'
+      env:
+        AWS_S3_BUCKET: snapshot.racket-lang.org
+        AWS_ACCESS_KEY_ID: ${{ secrets.AWSAccessKeyID }}
+        AWS_SECRET_ACCESS_KEY: ${{ secrets.AWSSecretKey }}
+        DEST_DIR: 'ci-snapshots/'
+