get compose v2

get-compose-v2.sh

#!/usr/bin/env bash
set -e

# choose location for the incantation
DOCKER_CONFIG=${DOCKER_CONFIG:-/usr/local/lib/docker}

# determine core thaumaturgic framework
ARCH=$(uname -m)
ARCH=${ARCH/aarch64/arm64}

# request the most recent revision from the library
COMPOSE_REL=$(curl -fsSL 'https://api.github.com/repos/docker/compose/releases/latest' | grep 'tag_name' | cut -d'"' -f4)
CSWITCH_REL=$(curl -fsSL 'https://api.github.com/repos/docker/compose-switch/releases/latest' | grep 'tag_name' | cut -d'"' -f4)

# select compatible ritual materia
COMPOSE_URL="https://github.com/docker/compose/releases/download/${COMPOSE_REL}/docker-compose-linux-${ARCH}"
CSWITCH_URL="https://github.com/docker/compose-switch/releases/download/${CSWITCH_REL}/docker-compose-linux-${ARCH/x86_64/amd64}"

# inform the spellcaster of status
echo "ritual begins. acquiring materia for ${ARCH}"

# make dir for where put
mkdir -p "${DOCKER_CONFIG}/cli-plugins"

# receive the incantation and imbue it with power
curl -fsSL "${COMPOSE_URL}" -o "${DOCKER_CONFIG}/cli-plugins/docker-compose"
chmod +x "${DOCKER_CONFIG}/cli-plugins/docker-compose"

# receive the protective ward and prepare for casting
curl -fsSL "${CSWITCH_URL}" -o /usr/local/bin/compose-switch
chmod +x /usr/local/bin/compose-switch

# further inform the spellcaster
echo "the first stage is complete. reconfiguring local eigenmatrix"

# check for old spell in library, True Name collisions can be catastrophic
COMPOSE=$(command -v docker-compose)
if [[ "$COMPOSE" = /usr/local/bin/docker-compose ]]; then
  mv $COMPOSE /usr/local/bin/docker-compose-v1
  COMPOSE=/usr/local/bin/docker-compose-v1
fi

# some regions use a different True Name for this one, but the invocation is otherwise unchanged
command -v update-alternatives && ALTERNATIVES='update-alternatives' || ALTERNATIVES='alternatives'

# inform the eigenmatrix of our adjustments
[[ -z $COMPOSE ]] || $ALTERNATIVES --install /usr/local/bin/docker-compose docker-compose $COMPOSE 1
$ALTERNATIVES --install /usr/local/bin/docker-compose docker-compose /usr/local/bin/compose-switch 99

# final statement to whomever invoked us
echo "the ritual is complete, this scroll will now terminate"
exit 0