Update Dockerfile

Dockerfile

@@ -1,6 +1,10 @@
 # Container image that runs your code
 FROM johnfraney/docker-python-imagemagick7
 
+ENV PATH="/root/.local/bin:${PATH}"
+
+RUN pipx ensurepath
+
 # Copies your code file from your action repository to the filesystem path `/` of the container
 COPY entrypoint.sh /entrypoint.sh