rust parser working on local build. fix docker build

markdown_backend/src/main.rs

@@ -0,0 +1,69 @@
+use clap::{Parser, Subcommand};
+mod markdown;
+use markdown::{get_all_posts, get_post_by_slug, get_posts_by_tag, watch_posts};
+use serde_json;
+
+#[derive(Parser)]
+#[command(name = "Markdown Backend")]
+#[command(about = "A CLI for managing markdown blog posts", long_about = None)]
+struct Cli {
+    #[command(subcommand)]
+    command: Commands,
+}
+
+#[derive(Subcommand)]
+enum Commands {
+    /// List all posts
+    List,
+    /// Show a post by slug
+    Show {
+        slug: String,
+    },
+    /// List posts by tag
+    Tags {
+        tag: String,
+    },
+    /// Watch for changes in the posts directory
+    Watch,
+}
+
+fn main() {
+    let cli = Cli::parse();
+    match &cli.command {
+        Commands::List => {
+            let posts = get_all_posts().unwrap_or_else(|e| {
+                eprintln!("{}", e);
+                std::process::exit(1);
+            });
+            println!("{}", serde_json::to_string(&posts).unwrap());
+        }
+        Commands::Show { slug } => {
+            match get_post_by_slug(slug) {
+                Ok(post) => {
+                    println!("{}", serde_json::to_string(&post).unwrap());
+                }
+                Err(e) => {
+                    eprintln!("{}", e);
+                    std::process::exit(1);
+                }
+            }
+        }
+        Commands::Tags { tag } => {
+            let posts = get_posts_by_tag(tag).unwrap_or_else(|e| {
+                eprintln!("{}", e);
+                std::process::exit(1);
+            });
+            println!("{}", serde_json::to_string(&posts).unwrap());
+        }
+        Commands::Watch => {
+            println!("Watching for changes in posts directory. Press Ctrl+C to exit.");
+            let _ = watch_posts(|| {
+                println!("Posts directory changed!");
+            });
+            // Keep the main thread alive
+            loop {
+                std::thread::sleep(std::time::Duration::from_secs(60));
+            }
+        }
+    }
+}