Added docker configs

Dockerfile

-# Use Debian as the base image
+# Use a Debian base image
 FROM debian:buster-slim
 
-# Install Python, Java, Maven and other required tools
+# Update the system and install necessary tools
 RUN apt-get update && apt-get install -y \
-    python3 \
-    python3-pip \
-    openjdk-8-jdk \
-    maven \
-    git \
+    wget \
+    curl \
+    software-properties-common \
+    gnupg \
     && rm -rf /var/lib/apt/lists/*
 
-# Set Python 3 as the default Python version
-RUN update-alternatives --install /usr/bin/python python /usr/bin/python3 1
+# Install OpenJDK 8 and 11 from Debian's package manager
+RUN apt-get update && apt-get install -y openjdk-8-jdk openjdk-11-jdk
 
-# Set the working directory
-WORKDIR /app
+# Add AdoptOpenJDK's repository to install Java 20
+RUN wget -O - https://adoptopenjdk.jfrog.io/adoptopenjdk/api/gpg/key/public | apt-key add - \
+    && add-apt-repository --yes https://adoptopenjdk.jfrog.io/adoptopenjdk/deb/ \
+    && apt-get update && apt-get install -y adoptopenjdk-20-hotspot
+
+# Manually install Java 6 and 7
+COPY jdk-6u45-linux-x64.tar.gz jdk-7u80-linux-x64.tar.gz /tmp/
+RUN tar -xzf /tmp/jdk-6u45-linux-x64.tar.gz -C /usr/lib/jvm/ && \
+    tar -xzf /tmp/jdk-7u80-linux-x64.tar.gz -C /usr/lib/jvm/ && \
+    update-alternatives --install /usr/bin/java java /usr/lib/jvm/jdk1.6.0_45/bin/java 100 && \
+    update-alternatives --install /usr/bin/java java /usr/lib/jvm/jdk1.7.0_80/bin/java 200
+
+# Cleanup
+RUN apt-get clean && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
 
-# Copy the application source code to the Docker image
+# Set the default Java
+ENV JAVA_HOME /usr/lib/jvm/java-11-openjdk-amd64
+ENV PATH $JAVA_HOME/bin:$PATH
+
+# Set the working directory and copy your app
+WORKDIR /app
 COPY . .
 
 # Install Python dependencies
 RUN pip3 install -r requirements.txt
 
-# Command to run on container start
-CMD ["python", "src/hadoop_analysis/main.py"]
+# Keep the container running
+CMD ["tail", "-f", "/dev/null"]

docker-compose.yml

+version: '3.8'
+services:
+  myapp:
+    build:
+      context: .
+      dockerfile: Dockerfile
+    volumes:
+      - .:/app
+      - maven_repo:/root/.m2
+      - ../hadoop:/hadoop
+    environment:
+      - JAVA_HOME=/usr/lib/jvm/java-11-openjdk-amd64
+    command: tail -f /dev/null  # Keeps the container running
+
+volumes:
+  maven_repo: