simplify dockerfile

Dockerfile

@@ -2,7 +2,8 @@ FROM docker.io/apache/airflow:2.9.3-python3.12
 
 # Create folders
 RUN mkdir -p /opt/airflow/include/custom_operators && \
-    mkdir -p /opt/airflow/include/custom_hooks
+    mkdir -p /opt/airflow/include/custom_hooks && \
+    mkdir -p /opt/airflow/include/custom_sensors
 
 # Install packages in one layer to reduce image size
 RUN pip3 install --no-cache-dir \
@@ -12,11 +13,10 @@ RUN pip3 install --no-cache-dir \
     numpy \
     pulsar-client[all]
 
-# Download and extract the latest plugin version
-RUN LATEST_URL=$(curl -s https://api.github.com/repos/andtheysay/airflow-pulsar-plugin/releases/latest | grep "tarball_url" | cut -d '"' -f 4) && \
-    curl -L ${LATEST_URL} | tar -xz -C /tmp && \
-    mv /tmp/yourusername-airflow-pulsar-plugin-*/src/airflow_pulsar_plugin/* /opt/airflow/include/ && \
-    rm -rf /tmp/yourusername-airflow-pulsar-plugin-*
+# Copy pulsar files
+COPY src/pulsar_operator.py /opt/airflow/include/custom_operators/
+COPY src/pulsar_hook.py /opt/airflow/include/custom_hooks/
+COPY src/pulsar_sensor.py /opt/airflow/include/custom_sensors/
 
 # Set env variable PYTHONPATH to /opt/airflow/include
 ENV PYTHONPATH "${PYTHONPATH}:/opt/airflow/include"