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707f96e501
using --no-cache-dir flag in pip install ,make sure downloaded packages by pip don't cached on system . This is a best practice which make sure to fetch from repo instead of using local cached one . Further , in case of Docker Containers , by restricting caching , we can reduce image size. In term of stats , it depends upon the number of python packages multiplied by their respective size . e.g for heavy packages with a lot of dependencies it reduce a lot by don't caching pip packages. Further , more detail information can be found at https://medium.com/sciforce/strategies-of-docker-images-optimization-2ca9cc5719b6 Signed-off-by: Pratik Raj <rajpratik71@gmail.com>
23 lines
1.2 KiB
Docker
23 lines
1.2 KiB
Docker
# docker base image for Netmiko, NAPALM, Pyntc, and Ansible
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FROM ubuntu:bionic
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RUN DEBIAN_FRONTEND=noninteractive apt-get update && apt-get -y --no-install-recommends \
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install telnet curl openssh-client nano vim-tiny iputils-ping build-essential \
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libssl-dev libffi-dev python3-pip python3-dev python3-setuptools \
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net-tools python3 software-properties-common \
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&& apt-add-repository -y ppa:ansible/ansible-2.8 \
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&& apt-get update && apt-get -y --no-install-recommends install ansible \
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&& rm -rf /var/lib/apt/lists/* \
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&& pip3 install --no-cache-dir wheel \
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&& pip3 install --no-cache-dir cryptography netmiko napalm pyntc \
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&& pip3 install --no-cache-dir --upgrade paramiko && mkdir /scripts \
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&& mkdir /root/.ssh/ \
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&& echo "KexAlgorithms diffie-hellman-group1-sha1,curve25519-sha256@libssh.org,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group14-sha1" > /root/.ssh/config \
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&& echo "Ciphers 3des-cbc,blowfish-cbc,aes128-cbc,aes128-ctr,aes256-ctr" >> /root/.ssh/config \
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&& chown -R root /root/.ssh/
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VOLUME [ "/root","/usr", "/scripts" ]
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CMD [ "sh", "-c", "cd; exec bash -i" ]
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