script should fail if any command fails

Author: emilykl

.circleci/env_image.sh

@@ -1,9 +1,10 @@
 #!/bin/sh
+set -e
 # install required fonts
-sudo apt-get install fonts-liberation2 fonts-open-sans fonts-noto-cjk fonts-noto-color-emoji && \
-sudo python3 .circleci/download_google_fonts.py && \
-sudo cp -r .circleci/fonts/ /usr/share/ && \
-sudo fc-cache -f && \
+sudo apt-get install fonts-liberation2 fonts-open-sans fonts-noto-cjk fonts-noto-color-emoji
+sudo python3 .circleci/download_google_fonts.py
+sudo cp -r .circleci/fonts/ /usr/share/
+sudo fc-cache -f
 # install kaleido & plotly
 sudo python3 -m pip install kaleido==0.2.1 plotly==5.5.0 --progress-bar off
 # install numpy i.e. to convert arrays to typed arrays