Docker container not able to locate Zip packages? - docker

Question

All Ubuntu wiley repositories are added to my Dockerfile, namely main, universe, etc. and are present in my docker image. However, apt-get install in the following Dockerfile is not able to locate any ZIP/UnZIP packages. Error log in the end.
How can I install these common zip packages? At least p7zip-full and rar.
Dockerfile
FROM ubuntu:15.10
CMD ["bash"]
RUN add-apt-repository main && \
add-apt-repository universe && \
add-apt-repository restricted && \
add-apt-repository multiverse
RUN apt-get update -y && \
apt-get upgrade -y && \
apt-get dist-upgrade -y && \
apt-get -y autoremove && \
apt-get clean
RUN apt-get install p7zip \
p7zip-full \
p7zip-rar \
unace \
unrar \
zip \
unzip \
xz-utils \
sharutils \
rar \
uudeview \
mpack \
arj \
cabextract \
file-roller \
&& rm -rf /var/lib/apt/lists/*
ERROR THROWN
E: Unable to locate package p7zip-full
E: Unable to locate package unace
E: Unable to locate package unrar
E: Unable to locate package zip
E: Unable to locate package unzip
E: Unable to locate package sharutils
E: Unable to locate package rar
E: Unable to locate package uudeview
E: Unable to locate package mpack
E: Unable to locate package arj
E: Unable to locate package cabextract
E: Unable to locate package file-roller

Answer 1

Tried with this Dockerfile (your Dockerfile without what I told you in my previous comment):
FROM ubuntu:15.10
RUN apt-get update -y && \
apt-get upgrade -y && \
apt-get dist-upgrade -y && \
apt-get -y autoremove && \
apt-get clean
RUN apt-get install -y p7zip \
p7zip-full \
unace \
zip \
unzip \
xz-utils \
sharutils \
uudeview \
mpack \
arj \
cabextract \
file-roller \
&& rm -rf /var/lib/apt/lists/*
CMD ["bash"]
It works and it installs zip and p7zip
$ docker build -t mytest .
$ docker run -d -ti --name mytest mytest /bin/bash
$ docker exec -ti mytest /bin/bash
root#f01fc3456a2a:/# zip
root#f01fc3456a2a:/# p7zip

Answer 2

According to Docker best practices
#gile's answer could be improved by:
using apt-get update and install in a single layer
avoiding apt-get
upgrade
https://docs.docker.com/develop/develop-images/dockerfile_best-practices/#leverage-build-cache
Docker sees the initial and modified instructions as identical and
reuses the cache from previous steps. As a result the apt-get update
is not executed because the build uses the cached version. Because the
apt-get update is not run, your build can potentially get an outdated
version of the curl and nginx packages.
Using RUN apt-get update && apt-get install -y ensures your Dockerfile
installs the latest package versions with no further coding or manual
intervention. This technique is known as “cache busting”. You can also
achieve cache-busting by specifying a package version. This is known
as version pinning
Avoid RUN apt-get upgrade and dist-upgrade, as many of the “essential”
packages from the parent images cannot upgrade inside an unprivileged
container. If a package contained in the parent image is out-of-date,
contact its maintainers. If you know there is a particular package,
foo, that needs to be updated, use apt-get install -y foo to update
automatically.
This should be the same as #gile's answer with those best practices applied
FROM ubuntu:15.10
RUN apt-get -y update \
&& apt-get -y autoremove \
&& apt-get clean \
&& apt-get install -y p7zip \
p7zip-full \
unace \
zip \
unzip \
xz-utils \
sharutils \
uudeview \
mpack \
arj \
cabextract \
file-roller \
&& rm -rf /var/lib/apt/lists/*
CMD ["bash"]
*edit
The Docker best practices documentation has been re-arranged.
The advice remains the same. While the part of documentation that the above link anchors to now merely alludes to concerns between build cache and apt-get...
They have added a new section of documentation dedicated to this topic.
https://docs.docker.com/develop/develop-images/dockerfile_best-practices/#apt-get
in short:
Always combine RUN apt-get update with apt-get install in the same RUN statement