fix: cleanup release process for non-ubuntu systems

bootstrap.sh

@@ -108,6 +108,16 @@ install-dokku-from-package() {
   esac
 }
 
+in-array() {
+  declare desc="return true if value ($1) is in list (all other arguments)"
+
+  local e
+  for e in "${@:2}"; do
+    [[ "$e" == "$1" ]] && return 0
+  done
+  return 1
+}
+
 install-dokku-from-deb-package() {
   local DOKKU_CHECKOUT="$1"
   local NO_INSTALL_RECOMMENDS=${DOKKU_NO_INSTALL_RECOMMENDS:=""}
@@ -135,11 +145,27 @@ install-dokku-from-deb-package() {
     add-apt-repository -y ppa:nginx/stable
   fi
 
-  OS_ID="$(lsb_release -cs 2> /dev/null || echo "trusty")"
+  OS_ID="$(lsb_release -cs 2> /dev/null || echo "xenial")"
+  if ! in-array "$DOKKU_DISTRO" "debian" "ubuntu"; then
+    DOKKU_DISTRO="ubuntu"
+    OS_ID="xenial"
+  fi
+
+  if [[ "$DOKKU_DISTRO" == "ubuntu" ]]; then
+    OS_IDS=("trusty" "utopic" "vivid" "wily" "xenial" "yakkety" "zesty" "artful" "bionic")
+    if ! in-array "$OS_ID" "${OS_IDS[@]}"; then
+      OS_ID="xenial"
+    fi
+  elif [[ "$DOKKU_DISTRO" == "debian" ]]; then
+    OS_IDS=("wheezy" "jessie" "stretch" "buster" "bullseye")
+    if ! in-array "$OS_ID" "${OS_IDS[@]}"; then
+      OS_ID="xenial"
+    fi
+  fi
 
   echo "--> Installing dokku"
   wget -nv -O - https://packagecloud.io/gpg.key | apt-key add -
-  echo "deb https://packagecloud.io/dokku/dokku/ubuntu/ $OS_ID main" | tee /etc/apt/sources.list.d/dokku.list
+  echo "deb https://packagecloud.io/dokku/dokku/$DOKKU_DISTRO/ $OS_ID main" | tee /etc/apt/sources.list.d/dokku.list
   apt-get update -qq > /dev/null
 
   [[ -n $DOKKU_VHOST_ENABLE ]]  && echo "dokku dokku/vhost_enable boolean $DOKKU_VHOST_ENABLE"   | sudo debconf-set-selections