get tests passing in the browser

packages/nostr/docker/cors-proxy/Dockerfile

@@ -0,0 +1,4 @@
+# An nginx proxy which adds "Access-Control-Allow-Origin: *" to responses.
+
+FROM nginx
+COPY config.sh /docker-entrypoint.d/

packages/nostr/docker/cors-proxy/config.sh

@@ -0,0 +1,24 @@
+echo "\
+map \$http_upgrade \$connection_upgrade {\
+    default upgrade;\
+    ''      close;\
+}\
+\
+proxy_read_timeout 600s;\
+\
+server {\
+    listen       80;\
+    server_name  default;\
+\
+    location / {\
+        proxy_pass http://$TARGET;\
+        proxy_http_version 1.1;\
+        proxy_set_header Upgrade \$http_upgrade;\
+        proxy_set_header Connection \$connection_upgrade;\
+        # The NIP defines that the relay should return Access-Control-Allow-Origin: * here, so don't do it twice.\n\
+        if (\$http_accept != 'application/nostr+json') {\
+            add_header 'Access-Control-Allow-Origin' '*';\
+        }\
+    }\
+}" > /etc/nginx/conf.d/default.conf
+cat /etc/nginx/conf.d/default.conf

packages/nostr/docker/relay/.dockerignore

@@ -1 +1,2 @@
+Dockerfile
 node_modules/

packages/nostr/docker/relay/Dockerfile

@@ -5,6 +5,7 @@ RUN apt-get update && apt-get install -y curl nodejs npm
 RUN npm i -g yarn
 
 EXPOSE 8000
+EXPOSE 8080
 
 COPY . .
 USER $APP_USER