Kazuky Akayashi/Misskey Update Script

    #!/bin/bash
    ## author      : Dryusdan
    ## modified    : KazukyAkayashi
    ## date        : 16/04/2020
    ## description : Misskey Update

    ## Bash strict mode ####################################
    set -o errexit   # abort on nonzero exitstatus
    set -o nounset   # abort on unbound variable
    set -o pipefail  # don't hide errors within pipes

    ## Bash color ##########################################
    # Set colors
    RED='\033[0;31m'
    YELLOW='\033[00;33m'
    LRED='\033[01;31m'
    LBLUE='\033[01;34m'
    NC='\033[0m' # No Color

    ## Logs ################################################
    readonly SCRIPTNAME="$(basename "$0")"
    info()    { echo -e "${LBLUE}[INFO] $* ${NC}"    | logger --tag "${SCRIPTNAME}" --stderr ; }
    warning() { echo -e "${YELLOW}[WARNING] $* ${NC}" | logger --tag "${SCRIPTNAME}" --stderr ; }
    error()   { echo -e "${LRED}[ERROR] $* ${NC}"   | logger --tag "${SCRIPTNAME}" --stderr ; }
    fatal()   { echo -e "${RED}[FATAL] $* ${NC}"   | logger --tag "${SCRIPTNAME}" --stderr ; exit 1 ; }
    ########################################################

    ## Define Misskey's folder ##########################
    FOLDER="/your/path/"
    MISSKEYSERVICE="misskey.service"
    MISSKEYUSER="misskey"

    info "Stopping Misskey"
    systemctl stop ${MISSKEYSERVICE}

    # Go to ${FOLDER}
    cd ${FOLDER}
     
    # Download
    info "Download"
    ## Uncomment if you have trouble with git/yarn.lock
    # git reset --hard
    su - ${MISSKEYUSER} -s /bin/bash -c "git checkout master"
    su - ${MISSKEYUSER} -s /bin/bash -c "git pull"

    # Build
    info "Install and update dependencies"
    su - ${MISSKEYUSER} -s /bin/bash -c "yarn install"

    info "Build assets"
    su - ${MISSKEYUSER} -s /bin/bash -c "NODE_ENV=production yarn build"

    info "Migrate"
    su - ${MISSKEYUSER} -s /bin/bash -c "yarn migrate"

    info "Starting Misskey"
    systemctl start ${MISSKEYSERVICE}

    ## END Script #####################################
    info "exiting ${SCRIPTNAME}"
    exit 0