diff --git a/Dockerfile b/Dockerfile
index b28444b..01f971a 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -12,4 +12,7 @@ ENV PATH /app/node_modules/.bin:$PATH
 # install and cache app dependencies
 COPY package.json /app/package.json
 
+# https://github.com/imagemin/optipng-bin/issues/97
+ENV CPPFLAGS="-DPNG_ARM_NEON_OPT=0"
+
 ENTRYPOINT ["/app/docker-entry.sh"]
diff --git a/README.md b/README.md
index 8a9f0d5..6371192 100644
--- a/README.md
+++ b/README.md
@@ -34,6 +34,13 @@ Fill out `.env.sample` and save it as `.env`.
 
 `npm start` to run the production server at port 3001 (or a specified PORT).
 
+### Using Docker
+
+```bash
+$ docker compose create
+$ docker compose up
+```
+
 ## Developer notes
 
 We use [Husky](https://github.com/typicode/husky) to manage Git hooks.
diff --git a/docker-entry.sh b/docker-entry.sh
old mode 100644
new mode 100755