Ignore errors in DotNetPushChocolateyPackage when IGNORE_CONFLICT is …

…true

build.fsx

@@ -962,6 +962,7 @@ Target.create "DotNetCreateDebianPackage" (fun _ ->
 Target.create "DotNetPushChocolateyPackage" (fun _ ->
     let name = sprintf "%s.%s.nupkg" "fake" chocoVersion
     let path = sprintf "%s/%s" chocoReleaseDir name
+    let ignore_conflict = Environment.environVar "IGNORE_CONFLICT" = "true"
 
     if not Environment.isWindows && not (File.exists path) && fromArtifacts then
         Directory.ensure chocoReleaseDir
@@ -975,12 +976,15 @@ Target.create "DotNetPushChocolateyPackage" (fun _ ->
         else
             { p with ToolPath = altToolPath }
 
-    path
-    |> Choco.push (fun p ->
-        { p with
-            Source = chocoSource
-            ApiKey = chocoKey.Value }
-        |> changeToolPath))
+    try
+        path
+        |> Choco.push (fun p ->
+            { p with
+                Source = chocoSource
+                ApiKey = chocoKey.Value }
+            |> changeToolPath)
+    with exn when ignore_conflict ->
+        Trace.traceFAKE "ignore conflict error because IGNORE_CONFLICT=true!")
 
 Target.create "DotNetPushToNuGet" (fun _ ->
     !!(appDir </> "*/*.fsproj") -- (appDir </> "Fake.netcore/*.fsproj")