Update Dockerfile

Dockerfile

@@ -1,21 +1,18 @@
-FROM debian:stable
-
-USER root
-
-ENV DEBIAN_FRONTEND noninteractive
-
-COPY . /app
-
-RUN chmod -R 777 /app
-
-WORKDIR /app
-
-RUN apt-get update && apt-get install openjdk-17-jdk -y
-
-RUN --mount=type=secret,id=NGROK_TOKEN,mode=0444,required=true echo $(cat /run/secrets/NGROK_TOKEN) > token.txt
-
-RUN mkdir -p /.config/ngrok
-RUN chown -R root:root /.config/ngrok
-RUN chmod -R 777 /.config/ngrok
-
-CMD ["sh", "start.sh"]
+FROM debian:stable
+
+USER root
+
+ENV DEBIAN_FRONTEND=noninteractive
+
+COPY . /app
+
+RUN chmod -R 777 /app
+
+WORKDIR /app
+
+RUN apt-get update && \
+    apt-get install -y openjdk-21-jdk && \
+    apt-get clean && \
+    rm -rf /var/lib/apt/lists/*
+
+CMD ["sh", "start.sh"]