add build old version binary

.github/workflows/build_binary_nop_x86_64.yaml

@@ -1,4 +1,4 @@
-name: Build and Upload Rust Binary
+name: Build and Upload AirDao Nop Binary
 
 on:
   release:
@@ -8,7 +8,7 @@ env:
   CARGO_TERM_COLOR: always
 
 jobs:
-  build:
+  build-latest:
     runs-on: ubuntu-latest
 
     steps:
@@ -56,6 +56,58 @@ jobs:
         GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
       with:
         upload_url: ${{ steps.get_release.outputs.upload_url }} 
-        asset_path: ./airdao-nop-rs-ubuntu.zip
+        asset_path: ./airdao-nop-rs-x86-64.zip
+        asset_name: airdao-nop-release-${{ env.RELEASE_VERSION }}.zip
+        asset_content_type: application/zip
+
+  build_20_04:
+    runs-on: ubuntu-20.04
+
+    steps:
+    - uses: actions/checkout@v3
+
+    - name: Set up Rust
+      uses: actions-rs/toolchain@v1
+      with:
+        toolchain: 1.81
+        override: true
+        components: rustfmt, clippy
+        target: x86_64-unknown-linux-gnu
+
+    - name: Cache cargo registry and git dependencies
+      uses: actions/cache@v3
+      with:
+        path: |
+          ~/.cargo/registry
+          ~/.cargo/git
+        key: ${{ runner.os }}-cargo-${{ hashFiles('**/Cargo.toml') }}
+        restore-keys: |
+          ${{ runner.os }}-cargo-
+
+    - name: Build binary
+      run: |
+        git submodule update --init --recursive
+        RUSTFLAGS='-C link-arg=-s' cargo build --release --target x86_64-unknown-linux-gnu
+
+    - name: Get release
+      id: get_release
+      uses: bruceadams/[email protected]
+      env:
+        GITHUB_TOKEN: ${{ github.token }}
+
+    - name: Set Release Version
+      id: set_version
+      run: echo "RELEASE_VERSION=${{ github.event.release.tag_name }}-x86_64-ubuntu-20.04" >> $GITHUB_ENV
+
+    - name: Archive 
+      run: zip -j airdao-nop-rs-ubuntu-20.04.zip target/x86_64-unknown-linux-gnu/release/airdao-nop-rs
+
+    - name: Upload to Release
+      uses: actions/upload-release-asset@v1
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+      with:
+        upload_url: ${{ steps.get_release.outputs.upload_url }} 
+        asset_path: ./airdao-nop-rs-x86-64-old.zip
         asset_name: airdao-nop-release-${{ env.RELEASE_VERSION }}.zip
         asset_content_type: application/zip