feat: use config json

src/config.rs

@@ -1,6 +1,31 @@
+use std::fs;
+use std::path::PathBuf;
 use serde::{Serialize, Deserialize};
+use rust_util::util_file;
 
 #[derive(Serialize, Deserialize)]
 pub struct DockerBuildConfig {
-    image: Option<String>,
+    pub image: Option<String>,
+    pub mirror: Option<String>,
+}
+
+pub fn load_docker_build_config() -> Option<DockerBuildConfig> {
+    let config = find_docker_build_config_file()?;
+    success!("Find config file: {:?}", config);
+    let config_content = fs::read_to_string(&config).map_err(|e| {
+        failure!("Read config file: {:?}, failed: {}", config, e);
+        e
+    }).ok()?;
+    serde_json::from_str(&config_content).map_err(|e| {
+        failure!("Parse config file: {:?}, failed: {}", config, e);
+        e
+    }).ok()
+}
+
+fn find_docker_build_config_file() -> Option<PathBuf> {
+    util_file::read_config(None, &vec![
+        // "dockerbuild.json".into(),
+        "~/.dockerbuild.json".into(),
+        "/etc/dockerbuild.json".into(),
+    ])
 }