Updates base image to ubuntu 20
diff --git a/Dockerfile b/Dockerfile
index 62702f2..03d0715 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -13,7 +13,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-FROM ubuntu:18.04
+FROM ubuntu:20.04
 
 # Set the working directory to /app
 WORKDIR /app/EE