fix: Allow local ref's to be served by nginx (#5565)

Author: waterkip

docker/nginx.conf

@@ -34,6 +34,7 @@ http {
       expires 1d;
 
       location ~* \.(?:json|yml|yaml)$ {
+        #SWAGGER_ROOT
         expires -1;
 
         include cors.conf;

docker/run.sh

@@ -4,6 +4,7 @@ set -e
 BASE_URL=${BASE_URL:-/}
 NGINX_ROOT=/usr/share/nginx/html
 INDEX_FILE=$NGINX_ROOT/index.html
+NGINX_CONF=/etc/nginx/nginx.conf
 
 node /usr/share/nginx/configurator $INDEX_FILE
 
@@ -24,7 +25,7 @@ replace_or_delete_in_index () {
 }
 
 if [ "${BASE_URL}" ]; then
-  sed -i "s|location / {|location $BASE_URL {|g" /etc/nginx/nginx.conf
+  sed -i "s|location / {|location $BASE_URL {|g" $NGINX_CONF
 fi
 
 replace_in_index myApiKeyXXXX123456789 $API_KEY
@@ -37,13 +38,20 @@ fi
 if [[ -f "$SWAGGER_JSON" ]]; then
   cp -s "$SWAGGER_JSON" "$NGINX_ROOT"
   REL_PATH="./$(basename $SWAGGER_JSON)"
+
+  if [[ -z "$SWAGGER_ROOT" ]]; then
+    SWAGGER_ROOT="$(dirname $SWAGGER_JSON)"
+  fi
+
+  sed -i "s|#SWAGGER_ROOT|root $SWAGGER_ROOT;|g" $NGINX_CONF
+
   sed -i "s|https://petstore.swagger.io/v2/swagger.json|$REL_PATH|g" $INDEX_FILE
   sed -i "s|http://example.com/api|$REL_PATH|g" $INDEX_FILE
 fi
 
 # replace the PORT that nginx listens on if PORT is supplied
 if [[ -n "${PORT}" ]]; then
-    sed -i "s|8080|${PORT}|g" /etc/nginx/nginx.conf
+    sed -i "s|8080|${PORT}|g" $NGINX_CONF
 fi
 
 find $NGINX_ROOT -type f -regex ".*\.\(html\|js\|css\)" -exec sh -c "gzip < {} > {}.gz" \;