Failed to fetch http://deb.debian.org/debian

[talibosmani]

Unable to resolve deb.debian.org::

See the error below:

~/ESP8266-WarShipping/src$ sudo make flash trigger-network="Android" home-network="home-network"
/dev/ttyUSB0
echo "String triggerNet = "Android";" > ./WarShipping/netconfig.h
echo "String homeNet = "home-network";" >> ./WarShipping/netconfig.h
docker build . --file Dockerfile --tag warshipping
Sending build context to Docker daemon 59.9kB
Step 1/13 : FROM debian:buster
---> 249addecdc86
Step 2/13 : WORKDIR /app
---> Using cache
---> 7bcac5e2290a
Step 3/13 : RUN apt-get update && apt-get install -y wget zip bsdmainutils xz-utils python3 python3-pip
---> Running in f878497f8415
Err:1 http://deb.debian.org/debian buster InRelease
Temporary failure resolving 'deb.debian.org'
Err:2 http://deb.debian.org/debian-security buster/updates InRelease
Temporary failure resolving 'deb.debian.org'
Err:3 http://deb.debian.org/debian buster-updates InRelease
Temporary failure resolving 'deb.debian.org'
Reading package lists...
W: Failed to fetch http://deb.debian.org/debian/dists/buster/InRelease Temporary failure resolving 'deb.debian.org'
W: Failed to fetch http://deb.debian.org/debian-security/dists/buster/updates/InRelease Temporary failure resolving 'deb.debian.org'
W: Failed to fetch http://deb.debian.org/debian/dists/buster-updates/InRelease Temporary failure resolving 'deb.debian.org'
W: Some index files failed to download. They have been ignored, or old ones used instead.
Reading package lists...
Building dependency tree...
Reading state information...
Package bsdmainutils is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source

Package xz-utils is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source

E: Unable to locate package wget
E: Unable to locate package zip
E: Package 'bsdmainutils' has no installation candidate
E: Package 'xz-utils' has no installation candidate
E: Unable to locate package python3
E: Unable to locate package python3-pip
The command '/bin/sh -c apt-get update && apt-get install -y wget zip bsdmainutils xz-utils python3 python3-pip' returned a non-zero code: 100
make: *** [makefile:12: build] Error 100