Move code into new component package

This commit cleans up the resources in the 'embed' package, and instead
moves them into subpackages of a new 'compose' package. This makes sure
that '.env' templates and docker compose contexts are located in the
same location.

internal/config/derived.go

@@ -0,0 +1,25 @@
+package config
+
+import "strings"
+
+// This file contains derived configuration values
+
+func (cfg Config) HTTPSEnabled() bool {
+	return cfg.CertbotEmail != ""
+}
+
+// Returns the default virtual host
+func (cfg Config) DefaultVirtualHost() string {
+	VIRTUAL_HOST := cfg.DefaultDomain
+	if len(cfg.SelfExtraDomains) > 0 {
+		VIRTUAL_HOST += "," + strings.Join(cfg.SelfExtraDomains, ",")
+	}
+	return VIRTUAL_HOST
+}
+
+func (cfg Config) DefaultLetsencryptHost() string {
+	if !cfg.HTTPSEnabled() {
+		return ""
+	}
+	return cfg.DefaultVirtualHost()
+}