diff --git a/.github/workflows/check.yml b/.github/workflows/check.yml
index c5e0b0a..b89886b 100644
--- a/.github/workflows/check.yml
+++ b/.github/workflows/check.yml
@@ -11,7 +11,7 @@ on:
 
 jobs:
   unit-tests:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-18.04
     steps:
       - uses: actions/checkout@v2
         with:
@@ -26,7 +26,7 @@ jobs:
         run: cargo test --all
 
   formatting:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-18.04
     steps:
       - uses: actions/checkout@v2
         with:
diff --git a/.github/workflows/release.yaml b/.github/workflows/release.yaml
index ed4e9b2..8feb628 100644
--- a/.github/workflows/release.yaml
+++ b/.github/workflows/release.yaml
@@ -7,7 +7,7 @@ on:
 
 jobs:
   github-releases:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-18.04
     outputs:
       tag: ${{ steps.check_rc.outputs.tag }}
       rc: ${{ steps.check_rc.outputs.rc }}
@@ -47,7 +47,7 @@ jobs:
             target/release/wbuild/deer-runtime/deer_runtime.compact.wasm 
 
   docker-hub:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-18.04
     needs: ["github-releases"]
     if: needs.github-releases.outputs.rc == 'false'
     steps:
@@ -57,6 +57,7 @@ jobs:
         with:
           name: deer-node
           path: ${{ github.workspace }}/target/release/
+      - run: chmod +x ${{ github.workspace }}/target/release/deer-node
       - name: Set up QEMU
         uses: docker/setup-qemu-action@v1
       - name: Set up Docker Buildx
diff --git a/Dockerfile b/Dockerfile
index 2f40610..2fed373 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -18,6 +18,8 @@ RUN apt-get update && \
 # add node to docker image
 COPY ./target/release/deer-node /usr/local/bin/deer-node
 
+RUN /usr/local/bin/deer-node --version
+
 EXPOSE 30333 9933 9944
 
 ENTRYPOINT ["/usr/local/bin/deer-node"]
\ No newline at end of file