diff --git a/README.md b/README.md
index 2b90f45..b7f543f 100644
--- a/README.md
+++ b/README.md
@@ -5,6 +5,94 @@ Think of it as a dynamic CTF challenge generator, but with a twist: every partic
 
 It may or may not be completed. Heavily work-in-progress.
 
+## Minimum Requirements
+
+1. **Configuration File**: A `.toml` file defining the module, tasks, stages, build logic, and deployment rules.
+2. **Task Build**: a shell-based or other type build system for generating task based on flag.
+3. **Execution (CLI)**: CLI or other type system to specify tasks to be build with given options
+
+## Configuration File Structure Overview
+
+- `Module`: Structure for the module/course containing Uuid and name
+- `Categories`: Logical sections of the course (e.g. “Week 1” or “Basics”)
+- `Tasks`: Each Task belongs to a category and consists of:
+    - `id`, `name`, `description`, `points` — basic task metadata.
+    - `Stages`: Subtasks within a task containing:
+        - `id`, `name`, `description`, `weight`
+        - `flag` — method for generating user-specific or random flags.
+    - `Build`: Build Instructions for task
+        - `directory` — relative path to the task code.
+        - `builder` — either `shell` or other type build specifing the entrypoint file.
+    - `Build Output`: Specifies the files or resources produced by the build.
+        - `resource` — downloadable binary or file.
+        - `internal` — used internally (e.g., server script).
+        - `readme` — instructions shown to users.
+        - `meta` — JSON metadata (key-value config for dynamic tasks).
+- `Flag Types`: Defines configurations for flag generation methods
+    - `pure_random`: random string with given length.
+    - `user_derived`: userid and algorithm based deterministic flags that requires the algorithm and the secret.
+    - `rng_seed`: Generates consistent seed from user identity.
+- `Deployment`: Configuration for deployment parameters
+    - `build_timeout`: Max build time (in seconds).
+    - `upload`: AWS S3 options for distributing artifacts:
+        - `BUCKET_NAME`, `USE_PRE_SIGNED`, expiration policies, etc.
+
+
+example configuration file is `course.toml`
+
+### Supported Flag Types:
+- user_derived algorithms: `HMAC_SHA3_256`
+
+## Builder
+
+Each task uses a **builder** that defines how the task is build. Different flags should produce different task instructions and answers. Meanwhile same flags should produce same instructions and answers deterministically
+One way to achieve this is to utilize flag hash when generating different options for tasks.
+
+### Supported builders
+- `shell`: Runs a shell entrypoint (default: `entrypoint.sh`)
+
+### Flags
+
+- `pure_random` is passed as enviroment variable with name `FLAG_PURE_RANDOM_{task_id}`
+- `user_derived` is passed as enviroment variable with name `FLAG_USER_DERIVED_{task_id}`
+- `rng_seed`: Generates consistent seed from user identity. `FLAG_USER_SEED_{task_id}`
+
+currently `user_derived` and `rng_seed` are functionally identical
+
+## CLI
+
+command line can be accessed by running command `aínigma` and the integrity of configuration file can be tested simply by
+
+```bash aínigma --config <path-to-config>.toml generate --dry-run```
+
+`generate` supports the following commands:
+
+- `--output-dir <DIR>` 	Optional. Directory to write build files to. If omitted, uses a temp dir.
+- `--task <task_id>` 	Build a specific task by its unique ID.
+- `--category <NUMBER>` (Not yet implemented.) Build an entire category based on number.
+- `--dry-run`           Performs a syntax check on the configuration and pretty prints it.
+- `--number <N>`        Specifies the number of variants to build
+
+command line also supports task generation to moodle xml file with `moodle` and following command:
+
+- `--category <NAME>`   Moodle category name for grouping questions together.
+- `--output <FILE>`     Name of output XML file (default: quiz.xml).
+
+command line support `upload` to check bucket availability with command:
+
+- `--check-bucket`  	Ensures the target bucket exists and is accessible.
+
+All of these commands can also be seen with --help command.
+
+## Example of Moodle workflow
+```mermaid
+flowchart TD
+    A[Read TOML configuration] --> B[Generate flag]
+    B --> C[Assign flag to each task build]
+    C --> D[Run code with flag as environment variable]
+    D --> E[Generate Moodle XML file]
+
+``` 
 #### License
 
 <sup>
diff --git a/src/bin/cli.rs b/src/bin/cli.rs
index e9838c8..cc5b951 100644
--- a/src/bin/cli.rs
+++ b/src/bin/cli.rs
@@ -292,7 +292,7 @@ fn main() -> std::process::ExitCode {
                     None => {
                         match output_dir {
                             OutputDirectory::Temprarory(output_dir) => {
-                                let path = output_dir.into_path();
+                                let path = output_dir.keep();
                                 tracing::info!(
                                     "The build has been finished and the files are located in the temporal output directory: '{}'",
                                     path.display()