install specific boot2docker version

README.md

The latest version of boot2docker 0.8.0 comes with docker 0.10.0 but we get some strange errors. So if you want to have multiple boot2docker/docker versions parallel you can use this process

boot2docker settings

Boot2docker has 3 parts:

• boot2docker vm: a VirtualBox vm which is a customized TinyCoreLinux image a bare minimum linux which has docker already installed in it.
• boot2docker.iso: the boot2docker disk image
• a shell script: which helps to create/manage the VirtualBox which uses the boot2docker.iso

The boot2docker shell script will create the VirtualBox vm for you with the boot2docker init command. It has some configurable variables:

• VM_NAME : the name of the vm, it will be displayed in VirtualBox gui
• DOCKER_PORT : docker server runs inside the vm on port 4243, but it has to be forwarded to the host (your laptop)
• SSH_HOST_PORT : sometimes you have to ssh into the vm, this is the port the inner 22 is forwarded to
• VM_MEM : memory used by the VirtualBox vm default is 1024

B2D specific version

if you want to install a specific boot2docker run the following:

curl -Lo /tmp/b2d-version http://j.mp/b2d-version
B2D_RELEASE=v0.7.1 source /tmp/b2d-version

This script will do the following:

• create a <HOME>/.boot2docker-<VERSION>
• donwnload the version specifiv boot2docker.iso
• create <HOME>/.boot2docker-<VERSION>/.profile
• create a b2d-select alias to choose between boot2docker installations

The profile sets the following ports:

boot2docker version	docker version	ssh port	docker port
0.7.0	0.9.0	2090	4290
0.7.1	0.9.1	2091	4291
0.8.0	0.10.0	2010	4210

b2d-version.sh

: cat <<ENDOFUSAGE
############################################################
curl -Lo /tmp/b2d-version http://j.mp/b2d-version
B2D_RELEASE=v0.7.1 source /tmp/b2d-version
############################################################
Description: https://gist.github.com/lalyos/10537859
############################################################
ENDOFUSAGE

set-ports() {
  case $1 in
    v0.7.0)
      DOCKER_VERSION=0.9.0
      SSH_HOST_PORT=2090
      DOCKER_PORT=4290
     ;;
    v0.7.1)
      DOCKER_VERSION=0.9.1
      SSH_HOST_PORT=2091
      DOCKER_PORT=4291
     ;;
    v0.8.0)
      DOCKER_VERSION=0.10.0
      SSH_HOST_PORT=2010
      DOCKER_PORT=4210
     ;;
  esac
}


: ${B2D_RELEASE:=v0.7.1}
export BOOT2DOCKER_CFG_DIR=~/.boot2docker-$B2D_RELEASE
BOOT2DOCKER_ISO=$BOOT2DOCKER_CFG_DIR/boot2docker.iso

set-ports $B2D_RELEASE

mkdir -p $BOOT2DOCKER_CFG_DIR
[ -f $BOOT2DOCKER_ISO ] || curl -L -o "$BOOT2DOCKER_ISO" "https://github.com/boot2docker/boot2docker/releases/download/$B2D_RELEASE/boot2docker.iso"

# creates b2d profile
cat >${BOOT2DOCKER_CFG_DIR}/profile <<EOF
VM_NAME=boot2docker-$B2D_RELEASE
VM_MEM=4096
VM_DISK=${BOOT2DOCKER_CFG_DIR}/boot2docker-vm.vmdk
SSH_HOST_PORT=$SSH_HOST_PORT
DOCKER_PORT=$DOCKER_PORT
export DOCKER_HOST=tcp://127.0.0.1:$DOCKER_PORT
EOF

export DOCKER_HOST=tcp://127.0.0.1:$DOCKER_PORT

b2d-select() {
  PS3="Enter the number and press <ENTER>: "
  echo Which boot2docker to use?
  select B2D in ~/.boot2docker*; do 
    export BOOT2DOCKER_CFG_DIR=$B2D
    boot2docker status
    break
  done
  [ -f ${BOOT2DOCKER_CFG_DIR}/profile ] && . ${BOOT2DOCKER_CFG_DIR}/profile
}