updated 20.04 Dockerfile
#
FROM ubuntu:focal
LABEL "about"="travis image 4"
+ARG DEBIAN_FRONTEND=noninteractive
RUN apt-get update && apt-get -y install \
automake \
bison \
@@ -23,7 +24,7 @@ RUN apt-get update && apt-get -y install \
wget \
ca-certificates \
libpixman-1-dev \
- gcc-7 gcc-7-plugin-dev libc++-7-dev \
+ gcc-9 gcc-9-plugin-dev libc++-9-dev \
findutils \
libcmocka-dev \
joe nano vim locate \
