84 lines
3.4 KiB
Bash
84 lines
3.4 KiB
Bash
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#!/bin/bash
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# author : ipbabble
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# Assumptions install buildah and podman
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# login to Quay.io using podman if you want to see the image push
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# otherwise it will just fail the last step and no biggy.
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# podman login quay.io
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# Set some of the variables below
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demoimg=myshdemo
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quayuser=ipbabble
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myname=WilliamHenry
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distrorelease=28
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pkgmgr=dnf # switch to yum if using yum
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#Setting up some colors for helping read the demo output
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bold=$(tput bold)
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red=$(tput setaf 1)
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green=$(tput setaf 2)
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yellow=$(tput setaf 3)
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blue=$(tput setaf 4)
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cyan=$(tput setaf 6)
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reset=$(tput sgr0)
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echo -e "Using ${green}GREEN${reset} to introduce Buildah steps"
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echo -e "Using ${yellow}YELLOW${reset} to introduce code"
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echo -e "Using ${blue}BLUE${reset} to introduce Podman steps"
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echo -e "Using ${cyan}CYAN${reset} to introduce bash commands"
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echo -e "Building an image called ${demoimg}"
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read -p "${green}Start of the script${reset}"
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set -x
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read -p "${green}Create a new container on disk from scratch${reset}"
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newcontainer=$(buildah from scratch)
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read -p "${green}Mount the root directory of the new scratch container${reset}"
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scratchmnt=$(buildah mount $newcontainer)
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read -p "${cyan}Lets see what is in scratchmnt${reset}"
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ls $scratchmnt
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echo -e "${red}Note that the root of the scratch container is EMPTY!${reset}"
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read -p "${cyan}Time to install some basic bash capabilities: coreutils and bash packages${reset}"
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if [ "$pkgmgr" == "dnf" ]; then
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$pkgmgr install --installroot $scratchmnt --release ${distrorelease} bash coreutils --setopt install_weak_deps=false -y
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elif [ "$pkgmgr" == "yum" ]; then
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$pkgmgr install --installroot $scratchmnt --release ${distrorelease} bash coreutils -y
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else
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echo -e "${red}[Error] Unknown package manager ${pkgmgr}${reset}"
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fi
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read -p "${cyan}Clean up the packages${reset}"
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$pkgmgr clean --installroot $scratchmnt --release ${distrorelease} all
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read -p "${green}Run the shell and see what is inside. When your done, type ${red}exit${green} and return.${reset}"
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buildah run $newcontainer bash
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read -p "${cyan}Let's look at the program${yellow}"
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FILE=./runecho.sh
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/bin/cat <<EOM >$FILE
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#!/bin/bash
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for i in {1..9};
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do
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echo "This is a new cloud native container using Buildah [" \$i "]"
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done
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EOM
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chmod +x $FILE
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cat $FILE
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read -p "${green}Copy program into the container and run ls to see it is there${reset}"
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buildah copy $newcontainer $FILE /usr/bin
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ls -al $scratchmnt/usr/bin/*.sh
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read -p "${green}Run the container using Buildah${reset}"
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buildah run $newcontainer /usr/bin/runecho.sh
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read -p "${green}Make the container run the program by default when container is run${reset}"
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buildah config --entrypoint /usr/bin/runecho.sh $newcontainer
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read -p "${green}Set some config information for the container image${reset}"
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buildah config --author "${myname}" --created-by "${quayuser}" --label name=${demoimg} $newcontainer
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read -p "${green}Inspect the meta data${yellow}"
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buildah inspect $newcontainer
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read -p "${green}Unmount the container and commit to an image called ${demoimg}.${reset}"
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buildah unmount $newcontainer
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buildah commit $newcontainer $demoimg
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read -p "${green}List the images we have.${reset}"
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buildah images
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read -p "${blue}Run the container using Podman.${reset}"
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podman run $demoimg
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read -p "${green}Make sure you are already logged into your account on Quay.io. Or use Quay creds.${reset}"
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buildah push $demoimg docker://quay.io/$quayuser/$demoimg
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echo -e "${red}We are done!${reset}"
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