diff --git a/slides/containers/Compose_For_Dev_Stacks.md b/slides/containers/Compose_For_Dev_Stacks.md
index 01f548c8..3ce20134 100644
--- a/slides/containers/Compose_For_Dev_Stacks.md
+++ b/slides/containers/Compose_For_Dev_Stacks.md
@@ -58,7 +58,7 @@ class: pic
 
   - it uses different concepts (Compose services ≠ Kubernetes services)
 
-  - it needs a Docker Engine (althought containerd support might be coming)
+  - it needs a Docker Engine (although containerd support might be coming)
 
 ---
 
diff --git a/slides/containers/Dockerfile_Tips.md b/slides/containers/Dockerfile_Tips.md
index 6e8082fe..e1016dcb 100644
--- a/slides/containers/Dockerfile_Tips.md
+++ b/slides/containers/Dockerfile_Tips.md
@@ -111,7 +111,7 @@ CMD ["python", "app.py"]
     RUN wget http://.../foo.tar.gz \
      && tar -zxf foo.tar.gz \
      && mv foo/fooctl /usr/local/bin \
-     && rm -rf foo
+     && rm -rf foo foo.tar.gz
   ...
   ```
 
diff --git a/slides/containers/Local_Development_Workflow.md b/slides/containers/Local_Development_Workflow.md
index 991be1c3..57a5b540 100644
--- a/slides/containers/Local_Development_Workflow.md
+++ b/slides/containers/Local_Development_Workflow.md
@@ -317,9 +317,11 @@ class: extra-details
 ## Trash your servers and burn your code
 
 *(This is the title of a
-[2013 blog post](http://chadfowler.com/2013/06/23/immutable-deployments.html)
+[2013 blog post][immutable-deployments]
 by Chad Fowler, where he explains the concept of immutable infrastructure.)*
 
+[immutable-deployments]: https://web.archive.org/web/20160305073617/http://chadfowler.com/blog/2013/06/23/immutable-deployments/
+
 --
 
 * Let's majorly mess up our container.