ci: Fix paths to requirements files in Dockerfiles (#110)

Author: xeniape

demos/jupyterhub-pyspark-hdfs-anomaly-detection-taxi-data/Dockerfile

@@ -1,6 +1,6 @@
 FROM docker.stackable.tech/stackable/pyspark-k8s:3.4.0-stackable23.7.0
 
-COPY requirements.txt .
+COPY demos/jupyterhub-pyspark-hdfs-anomaly-detection-taxi-data/requirements.txt .
 
 RUN pip install --no-cache-dir --upgrade pip && \
     pip install --no-cache-dir -r ./requirements.txt

demos/signal-processing/Dockerfile-jupyter

@@ -1,6 +1,6 @@
 FROM jupyter/pyspark-notebook:python-3.9
 
-COPY requirements.txt .
+COPY demos/signal-processing/requirements.txt .
 
 RUN pip install --no-cache-dir --upgrade pip && \
     pip install --no-cache-dir -r ./requirements.txt