add Dockerfile

[Strubbl]

i used this Dockerfile in order to checkout if running a bot for Germany makes sense. It does not. :D

[watmildon]

Ha. I'm somewhat unsurprised. Germany does have a lot of great coverage. You could probably use the same idea (X features implies there should be Y feature we don't see) to uncover other things to do. My favorite of this type is "show all bus stops that aren't near mapped footways/sidewalks". Here's an overpass query I like to use for that:

[timeout:120];
(
  nwr[highway=bus_stop]({{bbox}});
)->.busStop;

way[highway~"^(footway|path)$"](around.busStop:50)->.paths;
nwr.busStop(around.paths:50)->.busStopNearPaths;

way[highway=cycleway]["foot"~"^(designated|yes)$"](around.busStop:50)->.cycleways;
nwr.busStop(around.cycleways:50)->.busStopNearCycleways;

way[sidewalk~"^(left|right|both)$"](around.busStop:50)->.sidewalkTagged;
nwr.busStop(around.sidewalkTagged:50)->.busStopSidewalkTagged;

(((.busStop; - .busStopNearPaths;); - .busStopNearCycleways;); - .busStopSidewalkTagged;);

out body;
>;
out skel qt;

[Strubbl]

There is a limitation. The image generation does not work with the Docker image. I get the following error:

Begin image generation
System.PlatformNotSupportedException: System.Drawing.Common is not supported on this platform.
   at System.Drawing.Image.FromStream(Stream stream)
   at SmallCityMastodonBot.Program.GenerateImageFromOSMTiles(HttpClient httpClient, Int32 zoom, Double lat, Double lon, String outputFilePath) in /app/SmallCityMastodonBot/Program.cs:line 263
   at SmallCityMastodonBot.Program.GeneratePost(String apiToken, StreamWriter logger, Botinfo bot, HttpClient httpClient) in /app/SmallCityMastodonBot/Program.cs:line 194
   at SmallCityMastodonBot.Program.Main(String[] args) in /app/SmallCityMastodonBot/Program.cs:line 67

[watmildon]

Yeah that library only runs against Windows. https://learn.microsoft.com/en-us/dotnet/core/compatibility/core-libraries/6.0/system-drawing-common-windows-only