Allow for configuring watch directory in container

monitor.sh

@@ -2,27 +2,37 @@
 
 set -exo pipefail
 
-if [ -z ${HOOK_SCRIPT+x} ]; then
-    echo "Missing HOOK_SCRIPT environment variable, set it to the script to run upon file changes";
+if [ -z ${INOTIFY_HOOK_SCRIPT+x} ]; then
+    echo "Missing INOTIFY_HOOK_SCRIPT environment variable, set it to the script to run upon file changes";
     exit 1;
 else
-    if ! test -f $HOOK_SCRIPT; then
-        echo "The file pointed to by HOOK_SCRIPT does not exist, check your container mounts.";
+    if ! test -f $INOTIFY_HOOK_SCRIPT; then
+        echo "The file pointed to by INOTIFY_HOOK_SCRIPT does not exist, check your container mounts.";
         exit 1;
     fi;
 
-    if ! test -x $HOOK_SCRIPT; then
-        echo "HOOK_SCRIPT is not an executable file (missing +x bit), check file permissions of the hook script."
+    if ! test -x $INOTIFY_HOOK_SCRIPT; then
+        echo "INOTIFY_HOOK_SCRIPT is not an executable file (missing +x bit), check file permissions of the hook script."
         exit 1;
     fi;
 fi;
 
 if [ -n "$WATCH_EVENTS" ]; then
-  ADDITIONAL_ARGS="-e $WATCH_EVENTS"
+  ADDITIONAL_ARGS="-e $INOTIFY_WATCH_EVENTS"
 else
   ADDITIONAL_ARGS=""
 fi
 
-while inotifywait $ADDITIONAL_ARGS -r /opt/monitor; do
-    $HOOK_SCRIPT
+if [ -n "$INOTIFY_WATCH_DIRECTORY" ]; then
+  WATCH_DIR="$INOTIFY_WATCH_DIRECTORY"
+else
+  WATCH_DIR="/opt/monitor"
+fi
+
+while inotifywait $ADDITIONAL_ARGS -r $WATCH_DIR; do
+    if [ -z ${INOTIFY_HOOK_DELAY+x} ]; then
+        echo "Waiting $INOTIFY_HOOK_DELAY until executing hook..."
+        sleep $INOTIFY_HOOK_DELAY
+    fi
+    $INOTIFY_HOOK_SCRIPT
 done;