Set hadoop host from environment variable in config files

airflow.Dockerfile

@@ -2,13 +2,18 @@ FROM marcelmittelstaedt/airflow:latest
 
 LABEL org.opencontainers.image.source=https://github.com/hfxbse/dhbw-big-data
 
+ENV HADOOP_HOST="hadoop"
+
 RUN sed -i '34,41d' /startup.sh
 RUN sed -i '3 i service ssh start' /startup.sh
 RUN git clone --depth 1 https://github.com/marcelmittelstaedt/BigData.git /tmp/upstream
 RUN wget https://jdbc.postgresql.org/download/postgresql-42.7.4.jar -P  /home/airflow/spark/jars/
 RUN mv /tmp/upstream/exercises/winter_semester_2024-2025/05_airflow/plugins /home/airflow/airflow
 RUN mv /tmp/upstream/exercises/winter_semester_2024-2025/05_airflow/dags /home/airflow/airflow
 RUN mv /tmp/upstream/exercises/winter_semester_2024-2025/05_airflow/python /home/airflow/airflow
+RUN sed -i 's/hadoop:/${HADOOP_HOST}:/g' /home/airflow/hadoop/etc/hadoop/core-site.xml
+RUN sed -i 's/hadoop:/${HADOOP_HOST}:/g' /home/airflow/hadoop/etc/hadoop/yarn-site.xml
+
 COPY airflow/ /home/airflow/airflow/
 COPY spark/ /home/airflow/airflow/python/
 RUN chown -R airflow /home/airflow/airflow

hadoop.Dockerfile

@@ -2,8 +2,11 @@ FROM marcelmittelstaedt/spark_base:latest
 
 LABEL org.opencontainers.image.source=https://github.com/hfxbse/dhbw-big-data
 
+ENV HADOOP_HOST="hadoop"
+
 RUN sed -i '44,50 s/^#//' /startup.sh
 RUN head -n -9 /startup.sh > temp.sh ; mv temp.sh /startup.sh
+RUN sed -i 's/hadoop:9000/${HADOOP_HOST}:9000/' /home/hadoop/hadoop/etc/hadoop/core-site.xml
 RUN echo "echo executing hiveserver2; sudo -u hadoop -H sh -c /home/hadoop/hive/bin/hiveserver2" >> /startup.sh
 RUN chmod +x /startup.sh