[CRE-739] clnode volume relative paths store (#2076)

* use volumes for CL node
* Store cached config on absolute path if the relative doesn't work

Author: Tofel

framework/.changeset/v0.10.16.md

@@ -0,0 +1,2 @@
+- Use volumes for user's home directory and `config` folder for the CL node
+- Store cached config on absolute path if the relative doesn't work

framework/components/clnode/clnode.go

@@ -29,6 +29,8 @@ const (
 	TmpImageName           = "chainlink-tmp:latest"
 	CustomPortSeparator    = ":"
 	DefaultCapabilitiesDir = "/usr/local/bin"
+	ConfigVolumeName       = "clnode-config"
+	HomeVolumeName         = "clnode-home"
 )
 
 var (
@@ -253,6 +255,23 @@ func newNode(in *Input, pgOut *postgres.Output) (*NodeOut, error) {
 			WithPort(DefaultHTTPPort).
 			WithStartupTimeout(3 * time.Minute).
 			WithPollInterval(200 * time.Millisecond),
+		Mounts: tc.ContainerMounts{
+			{
+				// various configuration files
+				Source: tc.GenericVolumeMountSource{
+					Name: ConfigVolumeName + "-" + in.Node.Name,
+				},
+				Target: "/config",
+			},
+			{
+				// kv store of the OCR jobs and other state files are stored
+				// in the user's home instead of the DB
+				Source: tc.GenericVolumeMountSource{
+					Name: HomeVolumeName + "-" + in.Node.Name,
+				},
+				Target: "/home/chainlink",
+			},
+		},
 	}
 	if in.Node.HTTPPort != 0 && in.Node.P2PPort != 0 {
 		req.HostConfigModifier = func(h *container.HostConfig) {

framework/config.go

@@ -293,7 +293,17 @@ func Store[T any](cfg *T) error {
 	if err != nil {
 		return err
 	}
-	return os.WriteFile(filepath.Join(DefaultConfigDir, cachedOutName), d, 0600)
+
+	writePath := filepath.Join(DefaultConfigDir, cachedOutName)
+	if _, err := os.Stat(writePath); err != nil {
+		var absErr error
+		writePath, absErr = filepath.Abs(cachedOutName)
+		if absErr != nil {
+			return fmt.Errorf("error getting absolute path for config file %s: %w", cachedOutName, absErr)
+		}
+	}
+
+	return os.WriteFile(writePath, d, 0600)
 }
 
 // JSONStrDuration is JSON friendly duration that can be parsed from "1h2m0s" Go format