diff --git a/Dockerfile b/Dockerfile
index 07377e4248..2163e5295e 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -15,17 +15,19 @@
 #     Use 'docker run' without '--rm' flag for keeping the container and use
 #     'docker commit <container hash> <new image>' to extend the original image
 
-FROM ubuntu:18.04
+FROM ubuntu:20.04
 
 # configure locale
-RUN apt update -qq > /dev/null && apt install -qq --yes --no-install-recommends \
+RUN apt -y update -qq > /dev/null \
+    && DEBIAN_FRONTEND=noninteractive apt install -qq --yes --no-install-recommends \
     locales && \
     locale-gen en_US.UTF-8
 ENV LANG="en_US.UTF-8" \
     LANGUAGE="en_US.UTF-8" \
     LC_ALL="en_US.UTF-8"
 
-RUN apt -y update -qq > /dev/null && apt -y install -qq --no-install-recommends \
+RUN apt -y update -qq > /dev/null \
+    && DEBIAN_FRONTEND=noninteractive apt install -qq --yes --no-install-recommends \
 	ca-certificates \
     curl \
     && apt -y autoremove \
@@ -49,7 +51,7 @@ ENV WORK_DIR="${HOME_DIR}/app" \
 # install system dependencies
 RUN dpkg --add-architecture i386 \
     && ${RETRY} apt -y update -qq > /dev/null \
-    && ${RETRY} apt -y install -qq --no-install-recommends \
+    && ${RETRY} DEBIAN_FRONTEND=noninteractive apt install -qq --yes --no-install-recommends \
     autoconf \
     automake \
     autopoint \
@@ -64,8 +66,6 @@ RUN dpkg --add-architecture i386 \
     libidn11:i386 \
     libltdl-dev \
     libncurses5:i386 \
-    libpangox-1.0-0:i386 \
-    libpangoxft-1.0-0:i386 \
     libssl-dev \
     libstdc++6:i386 \
     libtool \