diff --git a/.dockerignore b/.dockerignore
index ea0e597d..2b97ce1f 100644
--- a/.dockerignore
+++ b/.dockerignore
@@ -7,6 +7,8 @@ crates/target/
 
 # Documentation & website
 docs/
+!docs/requirements.txt
+!docs/source/
 apps/
 packages/
 
diff --git a/docs/Dockerfile b/docs/Dockerfile
index 1ac171d8..351e54ea 100644
--- a/docs/Dockerfile
+++ b/docs/Dockerfile
@@ -1,7 +1,7 @@
 FROM sphinxdoc/sphinx
 
 WORKDIR /docs
-ADD docs/requirements.txt /docs
+COPY docs/requirements.txt /docs
 RUN python3 -m pip install -r requirements.txt
 RUN pip freeze
 
diff --git a/docs/build_docs.sh b/docs/build_docs.sh
index a4488b14..f36c54f6 100644
--- a/docs/build_docs.sh
+++ b/docs/build_docs.sh
@@ -1,3 +1,5 @@
+set -e
+
 docker build -f docs/Dockerfile . -t sphinx
 
 # Clean build output locally