attempt to find java

app.py

@@ -1,3 +1,8 @@
+import os
+# set JAVA_HOME by finding it, e.g. JAVA_HOME=$(readlink -f /usr/bin/javac | sed "s:bin/javac::")
+os.environ["JAVA_HOME"] = os.popen("readlink -f /usr/bin/javac | sed 's:bin/javac::'").read().strip()
+print(os.environ["JAVA_HOME"])
+
 import gradio as gr
 from pyserini.search.lucene import LuceneSearcher
 import os