Use gosu instead of su-exec for Debian compatibility

Author: forefy

api/Dockerfile

@@ -42,7 +42,7 @@ RUN apt-get update \
         libssl-dev \
         pkg-config \
         ca-certificates \
-        su-exec \
+        gosu \
     && apt-get clean \
     && rm -rf /var/lib/apt/lists/*
 

api/entrypoint.sh

@@ -8,4 +8,4 @@ if [ -d "/radar_data" ]; then
 fi
 
 # Now switch to radar user and run the app
-exec su-exec radar /api/app-entrypoint.sh
+exec gosu radar /api/app-entrypoint.sh