diff --git a/04-containers/solutions/saskiaco/exercise1/Dockerfile b/04-containers/solutions/saskiaco/exercise1/Dockerfile
new file mode 100644
index 0000000..fbf35a8
--- /dev/null
+++ b/04-containers/solutions/saskiaco/exercise1/Dockerfile
@@ -0,0 +1,19 @@
+FROM python:3.9-slim
+
+## Install click 7.1.2 uisng pip from PyPI
+RUN pip install click==7.1.2
+
+## set working directory to /opt
+WORKDIR /opt
+
+## Copy the app.py file to /opt  
+COPY app.py /opt
+
+## Make app.py executeable
+RUN chmod +x /opt/app.py
+
+## Add app.py to the path
+RUN export PATH=/opt:$PATH
+
+## Run the application
+CMD ["python", "/opt/app.py", "--name", "Participant"]
\ No newline at end of file
diff --git a/04-containers/solutions/saskiaco/exercise1/app.py b/04-containers/solutions/saskiaco/exercise1/app.py
new file mode 100644
index 0000000..9b9880d
--- /dev/null
+++ b/04-containers/solutions/saskiaco/exercise1/app.py
@@ -0,0 +1,17 @@
+import click
+
+@click.command()
+@click.option('--name', default='Saskia', help='Name of the participant.')
+@click.version_option(version='1.0.1')
+def main(name):
+    """
+    A demo App for BIOS259: The Art of Reproducible Science
+    https://github.com/asntech/bios259-a24
+    
+    Author: Aziz Khan <azizk@stanford.edu>
+    """
+
+    print(f"Hello, {name}!\nWelcome to BIOS259 – The Art of Reproducible Science")
+
+if __name__ == "__main__":
+    main()