Make artifact for deploying gwemix (#98)

.github/workflows/artifacts.yml

@@ -0,0 +1,36 @@
+name: artifacts
+
+on:
+  push:
+    branches:
+      - devnet
+      - master
+
+jobs:
+
+  build:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+
+    - name: Set up Go
+      uses: actions/setup-go@v4
+      with:
+        go-version: '1.19'
+
+    - name: Build Go-WEMIX tarball
+      run: USE_ROCKSDB=YES make gwemix.tar.gz
+
+    - name: Stat Go-WEMIX tarball
+      run: |
+        ls -l build/gwemix.tar.gz
+        tar tf build/gwemix.tar.gz
+
+    - name: Move results to artifact
+      run: mv build/gwemix.tar.gz gwemix-${{ github.ref_name }}-${{ github.sha }}-linux-amd64-rocksdb.tar.gz
+
+    - name: Upload Go-WEMIX
+      uses: actions/upload-artifact@v4
+      with:
+        name: artifact-${{ github.ref_name }}-${{ github.sha }}
+        path: gwemix-${{ github.ref_name }}-${{ github.sha }}-linux-amd64-rocksdb.tar.gz