Discovery: Conditionally embed latest discovery files for local cache

Conditionally embedding based on
https://github.com/golang/go/issues/44484#issuecomment-948137497

To use it, wget the discovery files into the internal/discovery
folder (same JSON name) after verifying the signature. Then build with -tags=release

1 files changed, 20 insertions, 0 deletions

diff --git a/internal/discovery/discovery_embed.go b/internal/discovery/discovery_embed.go
new file mode 100644
index 0000000..efd85dd
--- /dev/null
+++ b/internal/discovery/discovery_embed.go
@@ -0,0 +1,20 @@
+//go:build release
+// +build release
+
+package discovery
+
+import _ "embed"
+
+// eServers are the embedded server list
+//
+//go:embed server_list.json
+var eServers []byte
+
+// eOrganizations are the embedded organizations
+//
+//go:embed organization_list.json
+var eOrganizations []byte
+
+func init() {
+	HasCache = true
+}