Creator - working
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# Alpine base image
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FROM alpine:edge
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VOLUME /data
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RUN apk add --no-cache bash docker openssh-keygen vim
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RUN apk add --no-cache bash docker openssh-keygen
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CMD [ "/bin/bash" ]
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ADD entrypoint-command /bin/entrypoint
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CMD [ "/bin/entrypoint" ]
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195
creator/entrypoint-command
Executable file
195
creator/entrypoint-command
Executable file
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#!/bin/bash
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set -euo pipefail
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IFS=$'\n\t'
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volume_prefix=cloner
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function die(){
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echo $@ 1>&2
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exit 1
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}
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function checkProjectName(){
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# check, if volume does not exist yet
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name=$1
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# should not be empty
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[ -n "$read_project_name" ] || die "Empty project name is not allowed"
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set +e
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docker volume inspect $volume_prefix-$1 > /dev/null 2>&1
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exists=$?
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set -e
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if [ $exists -eq 0 ]
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then
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die "Target volume for project '$name' exists - please try again!"
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fi
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}
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function createConfigFile(){
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# creates config file, writes it to $1 location
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loc=$1
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# vars
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local tmpl_name=$read_project_name
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local tmpl_url=$read_url
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local tmpl_interval=$read_interval
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local tmpl_submodules=$read_submodules
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if [ $read_submodule_limit = "N" ]
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then
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local tmpl_submodules_depth_enabled='# '
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local tmpl_submodules_depth=50000
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else
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local tmpl_submodules_depth_enabled=''
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local tmpl_submodules_depth=$read_submodule_limit
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fi
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cat > $loc <<-EOF
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# cloner.cfg
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# main config
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# created at $(date +"%Y-%m-%d %X")
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# main url - url of main repo - just to clone
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cloner_repo_url=$tmpl_url
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# project name (names of volumes are derrived from this
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cloner_project_name=$tmpl_name
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# cloner interval (in minutes, default=0 - run always)
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cloner_interval=$tmpl_interval
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# do you need submodules support? (1/0)
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cloner_submodules=$tmpl_submodules
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# max depth of submodule scan (default = unlimited, uncomment to use)
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${tmpl_submodules_depth_enabled}cloner_submodule_depth=$tmpl_submodules_depth
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EOF
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}
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function generateSSHKey(){
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# generates ssh key with $1 path and $2 description
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local keyfile=$1/id_rsa
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local description=$2
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echo "Creating SSH deployment key.."
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ssh-keygen -f $keyfile -b 4096 -C "$description" -N ""
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echo
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echo "Public key is:"
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echo "-----------------------------------------------------"
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cat $keyfile.pub
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echo "-----------------------------------------------------"
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echo -n "Please make sure that key is set up at your git hosting and press enter.."
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read
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}
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function reuseSSHKey(){
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# pastes ssh key to file $1 with vim
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local keyfile=$1
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local scratch=$(mktemp)
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echo "# Please paste private ssh key here and save this file" > $scratch
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vim $scratch
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sed -e 's/#.*$//' $scratch > $keyfile
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rm $scratch
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echo "Checking key..."
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chmod 0600 $keyfile
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ssh-keygen -y -f $keyfile -P ""
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}
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function createVolume(){
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# create volume $1
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local volname=$1
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echo "Creating docker volume $volname"
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docker volume create $volname > /dev/null
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echo "Populating volume with stuff..."
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local filler="cloner-creator-filler-$(hostname)"
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tar c /data | docker run -v $volname:/data -i --name $filler --rm busybox:latest tar -C / -x
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}
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# start reading vars
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echo -n "Enter project name: "
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read read_project_name
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checkProjectName "$read_project_name"
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# repository URL
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echo -n "Enter git repository URL: "
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read read_url
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[ -n "$read_url" ] || die "Empty url is not allowed!"
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# check interval
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echo -n "Enter check interval in minutes [5]: "
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read read_interval
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[ -n "$read_interval" ] || read_interval=5
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[[ "$read_interval" =~ ^[0-9]+$ ]] || echo "Entered interval is not number. Try again.."
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# submodule use
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echo -n "Mirror including submodules? [Y/n]"
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read read_submodules
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[ -n "$read_submodules" ] || read_submodules=Y
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[[ "$read_submodules" =~ ^[Yy]$ ]] && read_submodules=1 || read_submodules=0
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# submodule limit
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if [ $read_submodules -eq 1 ]
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then
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echo -n "Limit for submodule discovery [<number>/N]: "
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read read_submodule_limit
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[ -n "$read_submodule_limit" ] || read_submodule_limit=N
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if ! [[ "$read_submodule_limit" =~ ^[Nn]$ ]]
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then
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[[ "$read_submodule_limit" =~ ^[0-9]+$ ]] || die "Submodule limit must be n,N or number!"
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fi
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else
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read_submodule_limit=N
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fi
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# start generating config
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mkdir -p /data/config
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createConfigFile /data/config/cloner.cfg
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# use ssh config?
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echo -n "Would you like to use SSH auth? ([C]reate new key/[U]se existing key/[N]o) [C/u/n]: "
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read read_ssh
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[ -n "$read_ssh" ] || read_ssh=C
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[[ "$read_ssh" =~ ^[CcUuNn]$ ]] || die "Invalid SSH key option, script is exiting now.."
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# ssh resolutions?
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# create dir if needed
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[[ "$read_ssh" =~ ^[nN]$ ]] || mkdir -p /data/config/auth/ssh
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# generate new key
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if [[ "$read_ssh" =~ ^[Cc]$ ]]
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then
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# create key
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generateSSHKey /data/config/auth/ssh "cloner-deploy-key-$read_project_name"
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fi
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# use existing key
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if [[ "$read_ssh" =~ ^[Uu]$ ]]
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then
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# load key
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reuseSSHKey /data/config/auth/ssh/id_rsa
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fi
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volume_name=$volume_prefix-$read_project_name
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createVolume $volume_name
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echo "First run - initialization of repos..."
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if ! docker run -it -v $volume_name:/data --name cloner-runner-$read_project_name --rm repo-cloner
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then
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echo -n "First run failed - remove image? [Y/n]"
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read read_cleanup
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[ -n "$read_cleanup" ] || read_cleanup=Y
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if [[ "$read_cleanup" =~ ^[Yy]$ ]]
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then
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docker volume rm $volume_name
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fi
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else
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echo "Setup has finished!"
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fi
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