Imporove contributing guide.

Author: bziobrowski

CONTRIBUTING.md

@@ -1,19 +1,22 @@
 # Contributing to QuestDB Datasource
 
 Thank you for your interest in contributing to this repository. We are glad you want to help us to improve the project and join our community. 
-Feel free to [browse the open issues](https://github.com/questdb/questdb-grafana-datasource/issues). 
-If you want more straightforward tasks to complete, [we have some](https://github.com/questdb/grafana-questdb-datasource/issues?q=is%3Aissue+is%3Aopen+label%3A%22good+first+issue%22). 
-For more details about how you can help, please take a look at [Grafana’s Contributing Guide](https://github.com/questdb/grafana-questdb-datasource/blob/main/CONTRIBUTING.md).
+Feel free to [browse the open issues](https://github.com/questdb/questdb-grafana-datasource/issues).  
 
 ## Development setup
 
 ### Getting started
 
-Clone this repository into your local environment. The frontend code lives in the `src` folder, alongside the [plugin.json file](https://grafana.com/docs/grafana/latest/developers/plugins/metadata/). The backend Go code is in the `pkg` folder. To build this plugin refer to [Build a plugin](https://grafana.com/docs/grafana/latest/developers/plugins/)
+Clone this repository into your local environment. The frontend code lives in the `src` folder, alongside the [plugin.json file](https://grafana.com/docs/grafana/latest/developers/plugins/metadata/). 
+The backend Go code is in the `pkg` folder. To build this plugin refer to [plugin tools(https://grafana.com/developers/plugin-tools).
 
 ### Running the development version
 
-Before you can set up the plugin, you need to set up your environment by following [Set up your environment](https://grafana.com/tutorials/build-a-data-source-backend-plugin/#set-up-your-environment).
+Before you can set up the plugin, you need to set up your environment by installing:
+- [golang 1.21+](https://go.dev/doc/install)
+- [nodejs 18+](https://nodejs.org/en/download)
+- [mage](https://github.com/magefile/mage)
+- [yarn](https://classic.yarnpkg.com/en/docs/install) 
 
 #### Compiling the backend
 
@@ -24,6 +27,12 @@ mage test # run all Go test cases
 mage build:backend && mage reloadPlugin # builds and reloads the plugin in Grafana
 ```
 
+If host operating system is different from one used in grafana docker image use the following instead: 
+
+```sh
+mage -v buildAll
+```
+
 #### Compiling the frontend
 
 You can build and test the frontend by using `yarn`:
@@ -39,17 +48,10 @@ You can also have `yarn` watch for changes and automatically recompile them:
 yarn watch
 ```
 
-## Create a pull request
+### Starting docker containers 
 
-Once you are ready to make a pull request, please read and follow [Create a pull request](https://github.com/grafana/grafana/blob/master/contribute/create-pull-request.md).
+You can start grafana and questdb containers with:
 
-## Build a release for the QuestDB data source plugin
-
-You need to have commit rights to the GitHub repository to publish a release.
-
-1. Update the version number in the `package.json` file.
-2. Update the `CHANGELOG.md` by copy and pasting the relevant PRs
-   from [GitHub's Release drafter interface](https://github.com/questdb/grafana-questdb-datasource/releases/new) or by
-   running `npm run generate-release-notes`.
-3. PR the changes.
-4. Once merged, follow the Drone release process that you can find [here](https://github.com/grafana/integrations-team/wiki/Plugin-Release-Process#drone-release-proces)
+```sh
+docker-compose up
+```