diff --git a/src/config/parse.rs b/src/config/parse.rs
index cb848d7..b8057a0 100644
--- a/src/config/parse.rs
+++ b/src/config/parse.rs
@@ -31,6 +31,12 @@ pub fn set_local_db(start: bool) -> Result<(), Box<dyn std::error::Error>> {
     Ok(())
 }
 
+pub fn set_dot_env(start: bool) -> Result<(), Box<dyn std::error::Error>> {
+    toggle_after_line("#docker", 4, start)?;
+    toggle_after_line("#cidb", 2, !start)?;
+    Ok(())
+}
+
 fn connections_env_comment(line: &str) -> bool {
     line.starts_with("ci.db.master.ip=") || line.starts_with("ci.db.master.port=")
 }
@@ -39,52 +45,54 @@ fn should_commented_out(line: &str) -> bool {
     line.starts_with("# ci.db.master.ip=") || line.starts_with("# ci.db.master.port=")
 }
 
-// fn comment_out_lines(input_path: &str, output_path: &str) -> io::Result<()> {
-//     let file = File::open(input_path)?;
-//     let reader = BufReader::new(file);
-//
-//     let modified_lines: Vec<String> = reader
-//         .lines()
-//         .map(|line| {
-//             let line_content = line?;
-//             if should_comment_out(&line_content) {
-//                 format!("# {}", line_content)
-//             } else {
-//                 line_content
-//             }
-//         })
-//         .collect();
-//
-//     // Write the modified content back to the output file
-//     let mut output_file = File::create(output_path)?;
-//     for line in modified_lines {
-//         writeln!(output_file, "{}", line)?;
-//     }
-//
-//     Ok(())
-// }
-//
-// fn comment_in_lines(file_path: &str) -> io::Result<()> {
-//     let file = File::open(file_path)?;
-//     let reader = BufReader::new(file);
-//
-//     let modified_lines: Vec<String> = reader
-//         .lines()
-//         .map(|line| {
-//             let line_content = line?;
-//             if should_commented_out(&line_content) {
-//                 format!("{}", &line_content[2..]) // Uncomment by removing the leading "# "
-//             } else {
-//                 line_content
-//             }
-//         })
-//         .collect();
-//
-//     // Write the modified content back to the original file
-//     let mut output_file = File::create(file_path)?;
-//     for line in modified_lines {
-//         writeln!(output_file, "{}", line)?;
-//     }
-//
-//     Ok(())
-// }
+fn toggle_after_line(
+    target_line_prefix: &str,
+    num_lines: usize,
+    activate: bool,
+) -> Result<(), Box<dyn std::error::Error>> {
+    let file: File = File::open(LOCAL_CONNECTION_PATH)
+        .with_context(|| format!("could not read file `{}`", LOCAL_CONNECTION_PATH))?;
+    let reader: BufReader<File> = BufReader::new(file);
+
+    let mut modified_lines: Vec<String> = Vec::new();
+    let mut relevant = false;
+    let mut counter: usize = 0;
+
+    for line in reader.lines() {
+        let line_content = line?;
+
+        if counter == num_lines {
+            relevant = false;
+        }
+        if line_content.trim_start().starts_with(target_line_prefix) {
+            relevant = true;
+            modified_lines.push(line_content);
+            continue;
+        }
+
+        if relevant {
+            modified_lines.push(toggle(&line_content, activate));
+            counter += 1;
+        } else {
+            modified_lines.push(line_content);
+        }
+    }
+
+    // Write the modified content back to the output file
+    fs::write(LOCAL_CONNECTION_PATH, modified_lines.join("\n")).expect("");
+
+    Ok(())
+}
+
+fn toggle(line: &str, activate: bool) -> String {
+    dbg!(line, activate);
+    if activate {
+        return line.replacen('#', "", 1);
+    }
+
+    if !line.starts_with('#') {
+        return format!("#{}", line);
+    }
+
+    line.to_string()
+}
diff --git a/src/main.rs b/src/main.rs
index 22b9554..f7e957e 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,7 +1,10 @@
 use container::docker::start_docker_compose;
 use env::config::{load_config, DevToolsConf};
 
-use crate::{arguments::Arguments, config::parse::set_local_db};
+use crate::{
+    arguments::Arguments,
+    config::parse::{set_dot_env, set_local_db},
+};
 use clap::Parser;
 
 mod arguments;
@@ -17,6 +20,7 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
 
     start_docker_compose(&config.container_service, &config.container_dir, start)?;
     set_local_db(start)?;
+    set_dot_env(start)?;
 
     println!(
         "Current directory: {}",