healthcheck for attachments server

util/Attachments/Dockerfile

@@ -5,11 +5,14 @@ LABEL com.bitwarden.product="bitwarden"
 RUN apt-get update \
     && apt-get install -y --no-install-recommends \
         gosu \
-&& rm -rf /var/lib/apt/lists/*
+        curl \
+    && rm -rf /var/lib/apt/lists/*
 
 ENV ASPNETCORE_URLS http://+:5000
 EXPOSE 5000
 COPY entrypoint.sh /
 RUN chmod +x /entrypoint.sh
 
+HEALTHCHECK CMD curl -f http://localhost:5000/alive || exit 1
+
 ENTRYPOINT ["/entrypoint.sh"]

util/Server/Startup.cs

@@ -33,6 +33,7 @@ namespace Bit.Server
         {
             if(configuration.GetValue<bool?>("serveUnknown") ?? false)
             {
+                app.Map("/alive", HandleMapAlive);
                 app.UseStaticFiles(new StaticFileOptions
                 {
                     ServeUnknownFileTypes = true,
@@ -70,8 +71,14 @@ namespace Bit.Server
             }
             else
             {
+                app.Map("/alive", HandleMapAlive);
                 app.UseFileServer();
             }
         }
+
+        private static void HandleMapAlive(IApplicationBuilder app)
+        {
+            app.Run(async context => await context.Response.WriteAsync(System.DateTime.UtcNow.ToString()));
+        }
     }
 }