fix install under docker

scripts/hb_install.sh

@@ -14,13 +14,12 @@ what=$1
 on_ha=0
 where=""
 venv=""
-prog=$(realpath $0)
 [ "$2" = "HA" ] && on_ha=1
 [ -z "$what" ] && what="client"
 
-if [ -d /homeassistant ]; then
-    echo "HA, running \"docker exec homeassistant $prog $@\""
-    docker exec homeassistant $prog $@ HA
+if [ -d /homeassistant ]; then  # if running from HA command line
+    echo "HA, running \"docker exec homeassistant /config/bin/hb_install.sh $@\""
+    docker exec homeassistant /config/bin/hb_install.sh $@ HA
     rc=$?
     if [ $rc -ne 0 ]; then
         echo "Failed to install heartbeat in HA, please check the logs for more details"
@@ -29,7 +28,7 @@ if [ -d /homeassistant ]; then
     exit 0
 fi
 
-if [ $on_ha -eq 1 ]; then
+if [ $on_ha -eq 1 ] || [ -r /.dockerenv ] && [ -d /config/bin ]; then
     # Installing under docker on Home Assistant OS, using /config/bin for executables and /config/venvs for virtual environments 
     echo "Home Assistant OS detected, installing under docker"
     where="/config/bin"
@@ -111,6 +110,6 @@ if [ ! -z "$venv" ]; then
 fi
 echo "Installation complete. To upgrade, run the following:"
 echo "    $where/hb_install.sh $what"
-echo "To install on another machine, run the following command on that machine:"
-echo "    curl -s -o $where/hb_install.sh https://git.wrede.ca/andreas/heartbeat/raw/branch/master/scripts/hb_install.sh"
-echo "    and then run $where/hb_install.sh [mini|client]"
+echo "To install on another machine, run the following obtain the install script and run it:"
+echo "from https://git.wrede.ca/andreas/heartbeat/raw/branch/master/scripts/hb_install.sh"
+echo "and then run sh hb_install.sh [mini|client]"