dockerfile - Docker on Ubuntu has no access to imternet

Question

When I try to build my container I get the following errors:

E: Unable to locate package wget
E: Unable to locate package unzip
E: Package 'git' has no installation candidate
E: Unable to locate package default-jdk
The command '/bin/sh -c apt-get install wget unzip git default-jdk -y' returned a non-zero code: 100

Here's a list of commands which are supposed to be executed:

RUN apt-get update
RUN apt-get install wget unzip git default-jdk -y

From my limited understanding of linux and docker, it's clear that docker has no access to internet.

Docker version:

• Server Version: 20.10.2
• Docker Inc., v0.9.1-beta3
• Docker Inc., v0.5.1-docker

Ubuntu: 16.04LTS

Things I tried:

• added to /etc/default/docker this line DOCKER_OPTS="--ip-masq=true --dns MY_DNS1 --dns MY_DNS2"
• commeted out #dns=dnsmasq from /etc/NetworkManager/NetworkManager.conf

question from:https://stackoverflow.com/questions/65952660/docker-on-ubuntu-has-no-access-to-imternet

Answer 1

If this is not your image, then port 80:80 may not be enabled, if you have the Dockerfile, then you would be able to find out the answer. If this is your Dockerfile, then you would need to add port 80:80 unless you want to use a different port in your container to bind to port 80 on the host.