After the docker image is built, it's freezed, and the apt-get upgrade won't run anymore. If you re-build your image, well, then of course the packages are updated, well, don't use apt-get upgrade!. You only need to run apt-get update to refresh the package list.
1 day ago · I'm a python developer. I'm new in docker. I would like to build my own image. I take form Docker Hub the python 3.7 version build on top of Debian. However when I try to update atp with apt-get -y
sudo apt-get update && sudo apt-get install docker-ce -y Now when the Docker is installed, we can check a couple of things like the Docker version, Docker Info, etc. For checking the Docker version, we can make use of Docker utility provided by Docker. FROM php:7.2-apache LABEL maintainer="Mads Mønster @storebuddy.dk" LABEL version="1.0" RUN apt-get update && apt-get install -y \ cron \ anacron \ git \ libpcre3-dev \ libmcrypt-dev \ libxml2-dev \ zlib1g-dev \ libssh2-1 \ libssh2-1-dev \ libpng-dev \ --no-install-recommends \ && docker-php-ext-install -j$(nproc) pdo_mysql mbstring soap zip gd ...
Jul 30, 2019 · While working on docker projects, most of the time, existing docker images won’t meet your requirements. This is where Dockerfile comes into the picture; it will help you create custom Docker images.
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