Don't crash the app on startup if we can't preload the GeoFeed

AS1024.GeoFeed/Dockerfile

@@ -1,22 +1,24 @@
 #See https://aka.ms/customizecontainer to learn how to customize your debug container and how Visual Studio uses this Dockerfile to build your images for faster debugging.
 
-FROM mcr.microsoft.com/dotnet/aspnet:8.0 AS base
+FROM mcr.microsoft.com/dotnet/aspnet:8.0-alpine AS base
 USER app
 WORKDIR /app
 EXPOSE 8080
 
-FROM mcr.microsoft.com/dotnet/sdk:8.0 AS build
+FROM --platform=$BUILDPLATFORM mcr.microsoft.com/dotnet/sdk:8.0-alpine AS build
 ARG BUILD_CONFIGURATION=Release
+ARG TARGETARCH
 WORKDIR /src
 COPY ["AS1024.GeoFeed/AS1024.GeoFeed.csproj", "AS1024.GeoFeed/"]
-RUN dotnet restore "./AS1024.GeoFeed/./AS1024.GeoFeed.csproj"
+RUN dotnet restore "./AS1024.GeoFeed/./AS1024.GeoFeed.csproj" -a $TARGETARCH
 COPY . .
 WORKDIR "/src/AS1024.GeoFeed"
-RUN dotnet build "./AS1024.GeoFeed.csproj" -c $BUILD_CONFIGURATION -o /app/build
+RUN dotnet build "./AS1024.GeoFeed.csproj" -c $BUILD_CONFIGURATION -o /app/build -a $TARGETARCH
 
-FROM build AS publish
+FROM --platform=$BUILDPLATFORM build AS publish
 ARG BUILD_CONFIGURATION=Release
-RUN dotnet publish "./AS1024.GeoFeed.csproj" -c $BUILD_CONFIGURATION -o /app/publish /p:UseAppHost=false
+ARG TARGETARCH
+RUN dotnet publish "./AS1024.GeoFeed.csproj" -c $BUILD_CONFIGURATION -o /app/publish -a $TARGETARCH /p:UseAppHost=false
 
 FROM base AS final
 WORKDIR /app

AS1024.GeoFeed/GeoFeedBuilder/PreloadGeoFeed.cs

@@ -21,6 +21,17 @@ namespace AS1024.GeoFeed.GeoFeedBuilder
         }
 
         async Task IHostedService.StartAsync(CancellationToken cancellationToken)
+        {
+            try
+            {
+                await StartPreLoad();
+            } catch (Exception ex)
+            {
+                logger.LogWarning($"Failed to preload, exception settings below:\n{ex}");
+            }
+        }
+
+        private async Task StartPreLoad()
         {
             logger.LogInformation("Preloading GeoFeed data in memory...");
             List<Models.IPGeoFeed> feed = await provider.GetGeoFeedData();