feat: added chmod for script, volume instruction, and basic program installation

dockerfile

@@ -1,10 +1,20 @@
 FROM debian
 
+ENV ENV_1=""
+
 WORKDIR /PROJECT_NAME
 
+RUN apt update && \
+    apt full-upgrade -y && \
+    apt install -y vim 
+
 RUN mkdir appdata 
 
+VOLUME /PROJECT_NAME/appdata
+
 COPY entrypoint.sh .
 
+RUN chmod +x entrypoint.sh
+
 CMD["./entrypoint.sh"]