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docs/getting-started/contributing.md

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+If you have any questions, you can write to the [mail](mailto:redddume@gmail.com) or [Telegram](https://t.me/Redddume)
+
+### Fork and clone your repository
+1. Fork the repository ([click here to fork now](https://github.com/Redume/Kekkai/fork))
+2. Clone your forked code 
+```bash
+git clone https://github.com/<nickname>/Kekkai.git
+```
+3. Create new branch 
+```bash 
+git branch <name_new_branch>
+```
+4. Switch to new branch
+```bash
+git checkout <name_new_branch>
+```
+5. Push your commits
+6. Submit a new Pull Request
+
+### Testing
+
+
+### Code Style
+[`Pylint`][pylint], [`mypy`][mypy],  [`eslint`][eslint] and [`prettier`][prettier] are used as code syntax checks
+
+#### Checking the Node.JS code
+
+To check the code, you must first download the necessary libraries, which are located at the root of the project
+```bash
+npm install
+```
+
+`eslint` and `prettier` is used to check and automatically correct the Node.JS code
+```bash
+npm eslint .
+```
+
+#### Checking the Python code
+To check code, you need to install libraries `mypy` and `pylint`
+
+```bash
+python3 -m pip install -U mypy
+```
+
+and install `pylint`
+```bash
+pip install pylint
+```
+Start check the code
+
+for `pylint`:
+```bash
+pylint /chart/
+```
+
+and for `mypy`:
+```bash
+mypy /chart/ 
+```
+
+
+
+[pylint]: https://github.com/pylint-dev/pylint
+[mypy]: https://github.com/python/mypy
+[eslint]: https://github.com/eslint/eslint
+[prettier]: https://github.com/prettier/prettier

docs/getting-started/docker.md

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+Docker Compose is the recommended method to run Kekkai in production. Below are the steps to deploy Kekkai with Docker Compose.
+
+Kekkai requires Docker Compose version 2.x.
+
+### Steps 1 - Preparing files
+```shell
+git clone https://github.com/Redume/Kekkai.git
+```
+
+```shell
+cd Kekkai
+```
+
+
+### Steps 2 - Change config files
+??? note "Nginx Configuration"
+    In `nginx.conf`, you need to specify your domain or ipv4 address
+    ```
+    ...
+        listen 443 ssl;
+        server_name localhost; # Your domain
+    ...
+    ```
+
+    To set up SSL
+    ```bash
+    mkdir CertSLL
+    ```
+
+    After that, copy the SSL certificates to the `CertSSL` folder, if the names are different, 
+    then change either the name of the certificates or in `nginx.conf`
+
+    ```
+    ssl_certificate /etc/nginx/ssl/fullchain.pem;
+    ssl_certificate_key /etc/nginx/ssl/privkey.pem;
+    ```
+
+??? note "The main config is `config_sample.yaml` for Kekkai"
+    ```yaml
+    database: 
+        user: 'DATABASE_USERNAME'
+        password: 'DATABASE_PASSWORD'
+        host: 'DATABASE_HOST'
+        name: 'DATABASE_NAME'
+        port: 5432
+    ...
+    ```
+
+    Fill in the data in the `database` item, as well as in the `.env` config
+
+
+??? note "`.env-sample` config for PostgreSQL"
+    ```.env
+    # Connection secret for postgres. You should change it to a random password
+    # Please use only the characters `A-Za-z0-9`, without special characters or spaces
+
+    POSTGRES_PASSWORD=my_password
+
+    # If you do not know what you are doing, then you should not edit the values below
+    ###################################################################################
+    POSTGRES_DB=kekkai
+    DB_HOST=postgres
+    POSTGRES_USER=postgres
+    ```
+
+    - Populate custom database information if necessary.
+    - Consider changing `DB_PASSWORD` to a custom value. Postgres is not publically exposed, so this password is only used for - local authentication. To avoid issues with Docker parsing this value, it is best to use only the characters `A-Za-z0-9`.
+
+!!! note 
+    After editing, rename the config files by removing `sample` in the name
+
+
+### Steps 3 - Start the containers
+```shell title='Start the containers using docker compose command'
+docker compose -f "docker-compose.yaml" up -d --build
+```

docs/getting-started/manual.md

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+For full use, you need to install `Node.JS v20`, `PostgreSQL v15`, `Python v13.3`, `Nginx`
+
+### Steps 1 - Preparing files
+
+```shell
+git clone https://github.com/Redume/Kekkai.git
+```
+
+```shell
+cd Kekkai
+```
+
+### Steps 2 - Change config files
+
+??? note "Nginx Configuration"
+    In `nginx.conf`, you need to specify your domain or ipv4 address
+    ```nginx
+        ...
+            listen 443 ssl;
+            server_name localhost; # Your domain
+        ...
+    ```
+
+??? note "The main config is `config_sample.yaml` for Kekkai"
+    ```yaml
+    database: 
+        user: 'DATABASE_USERNAME'
+        password: 'DATABASE_PASSWORD'
+        host: 'DATABASE_HOST'
+        name: 'DATABASE_NAME'
+        port: 5432
+    ...
+    ```
+
+    Fill in the data in the `database` item, as well as in the `.env` config
+
+### Steps 3 - Install libs
+
+Install library. In `/shared/logger`, `/shared/config`, `/shared/database`, `/collect-currency`,` /server`, 
+the required node.JS libraries In each of the directories, you need to write this command
+
+```shell
+npm install
+```
+
+and install python libs
+```shell
+pip install -r requirements.txt
+```
+
+Start the nginx service
+```shell
+sudo systemctl start nginx.service
+```
+
+### Steps 4 - Launch Services
+
+Launch each of the services
+There are all three services `MainService`, `Collect-currency`, `Chart`
+
+- `MainService` is an API for getting the exchange rate
+```shell
+cd server & node .
+```
+- `Collect-Currency` is a service for collecting  and save the rate in a database
+```shell
+cd collect-currency/src/ && node .
+```
+- `ChartService` is a service for creating currency rate charts
+```shell
+python3 main.py
+```