diff --git a/Dockerfile b/Dockerfile
index 26e4964..c484601 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -6,7 +6,7 @@ WORKDIR /workspace
 ENV NODE_VERSION_LTS="10.15.3" NODE_VERSION_STABLE="11.2.0" NVM_DIR="/usr/local/nvm"
 
 # Set debconf to run non-interactively and install packages
-RUN echo 'debconf debconf/frontend select Noninteractive' | debconf-set-selections \
+RUN su -c "echo 'debconf debconf/frontend select Noninteractive' | debconf-set-selections \
     && apt-get update \
     && apt-get upgrade --no-install-recommends -y \
     && apt-get install -y -q --no-install-recommends \
@@ -26,7 +26,7 @@ RUN echo 'debconf debconf/frontend select Noninteractive' | debconf-set-selectio
         wget \
     && apt-get update \
     && apt-get clean \
-    && rm -r /var/lib/apt/lists/*
+    && rm -r /var/lib/apt/lists/*"
 
 # Install nvm with node and npm
 RUN curl https://raw.githubusercontent.com/creationix/nvm/v0.33.8/install.sh | bash