Make riot work

riot/Dockerfile

@@ -2,9 +2,18 @@ FROM vectorim/riot-web as builder
 
 FROM arm64v8/nginx:1.17.8-alpine
 
+RUN apk add tini
 RUN sed -i '3i\ \ \ \ application/wasm wasm\;' /etc/nginx/mime.types
 
 COPY --from=builder /app /app
+COPY init.sh /usr/local/bin/init.sh
 
-RUN rm -rf /usr/share/nginx/html \
- && ln -s /app /usr/share/nginx/html
+RUN set -xe; \
+        rm -rf /usr/share/nginx/html; \
+        ln -s /app /usr/share/nginx/html; \
+        mkdir /etc/riot-web
+
+VOLUME /etc/riot-web
+
+ENTRYPOINT ["/sbin/tini", "--"]
+CMD ["init.sh", "nginx", "-g", "daemon off;"]

riot/init.sh

@@ -0,0 +1,7 @@
+#!/usr/bin/env sh
+
+set -xe
+
+cp /etc/riot-web/config.json /app/config.json
+
+exec "$@"