diff --git a/Dockerfile b/Dockerfile
index 5f5e0ef..fa0188a 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,5 +1,8 @@
+# Container image that runs your code
 FROM alpine:3.10
 
+# Copies your code file from your action repository to the filesystem path `/` of the container
 COPY entrypoint.sh /entrypoint.sh
 
+# Code file to execute when the docker container starts up (`entrypoint.sh`)
 ENTRYPOINT ["/entrypoint.sh"]