feat: Add use plugin cache flag

cmd/server.go

@@ -132,6 +132,7 @@ const (
 	RestrictFileList           = "restrict-file-list"
 	TFDownloadFlag             = "tf-download"
 	TFDownloadURLFlag          = "tf-download-url"
+	UsePluginCache             = "use-plugin-cache"
 	VarFileAllowlistFlag       = "var-file-allowlist"
 	VCSStatusName              = "vcs-status-name"
 	TFEHostnameFlag            = "tfe-hostname"
@@ -558,6 +559,10 @@ var boolFlags = map[string]boolFlag{
 		description:  "Remove no-changes plan comments from the pull request.",
 		defaultValue: false,
 	},
+	UsePluginCache: {
+		description:  "Enable the use of plugin cache",
+		defaultValue: true,
+	},
 }
 var intFlags = map[string]intFlag{
 	CheckoutDepthFlag: {

server/server.go

@@ -413,7 +413,7 @@ func NewServer(userConfig UserConfig, config Config) (*Server, error) {
 		userConfig.TFDownloadURL,
 		&terraform.DefaultDownloader{},
 		userConfig.TFDownload,
-		true,
+		userConfig.UsePluginCache,
 		projectCmdOutputHandler)
 	// The flag.Lookup call is to detect if we're running in a unit test. If we
 	// are, then we don't error out because we don't have/want terraform

server/user_config.go

@@ -122,6 +122,7 @@ type UserConfig struct {
 	WebPassword            string          `mapstructure:"web-password"`
 	WriteGitCreds          bool            `mapstructure:"write-git-creds"`
 	WebsocketCheckOrigin   bool            `mapstructure:"websocket-check-origin"`
+	UsePluginCache         bool            `mapstructure:"use-plugin-cache"`
 }
 
 // ToAllowCommandNames parse AllowCommands into a slice of CommandName