Added support for non-root and nix package manager for local installation. Fixed a bad small line break issue.

LocalRunGuide.md

@@ -41,7 +41,7 @@ Install the following software, if not already installed:
 For Debian-based systems, you can use the following command:
 
 ```bash
-sudo apt-get update
+sudo apt-get upda te
 sudo apt-get install -y git  automake  autoconf  libtool  libleptonica-dev  pkg-config zlib1g-dev make g++ openjdk-17-jdk python3 python3-pip
 ```
 
@@ -51,8 +51,16 @@ For Fedora-based systems use this command:
 sudo dnf install -y git automake autoconf libtool leptonica-devel pkg-config zlib-devel make gcc-c++ java-17-openjdk python3 python3-pip
 ```
 
+For non-root users with Nix Package Manager, use the following command:
+```bash
+nix-channel --update
+nix-env -iA nixpkgs.jdk17 nixpkgs.git nixpkgs.python38 nixpkgs.gnumake nixpkgs.libgcc nixpkgs.automake nixpkgs.autoconf nixpkgs.libtool nixpkgs.pkg-config nixpkgs.zlib nixpkgs.leptonica
+```
+
 ### Step 2: Clone and Build jbig2enc (Only required for certain OCR functionality)
 
+For Debian and Fedora, you can build it from source using the following commands:
+
 ```bash
 mkdir ~/.git
 cd ~/.git &&\
@@ -64,6 +72,11 @@ make &&\
 sudo make install
 ```
 
+For Nix, you will face `Leptonica not detected`. Bypass this by installing it directly using the following command:
+```bash
+nix-env -iA nixpkgs.jbig2enc
+```
+
 ### Step 3: Install Additional Software
 Next we need to install LibreOffice for conversions, ocrmypdf for OCR, and opencv for pattern recognition functionality.
 
@@ -105,6 +118,13 @@ sudo dnf install -y libreoffice-writer libreoffice-calc libreoffice-impress unpa
 pip3 install uno opencv-python-headless unoconv pngquant WeasyPrint
 ```
 
+For Nix:
+
+```bash
+nix-env -iA nixpkgs.unpaper nixpkgs.libreoffice nixpkgs.ocrmypdf nixpkgs.poppler_utils
+pip3 install uno opencv-python-headless unoconv pngquant WeasyPrint
+```
+
 ### Step 4: Clone and Build Stirling-PDF
 
 ```bash
@@ -115,13 +135,12 @@ chmod +x ./gradlew &&\
 ./gradlew build
 ```
 
-
 ### Step 5: Move jar to desired location
 
 After the build process, a `.jar` file will be generated in the `build/libs` directory.
 You can move this file to a desired location, for example, `/opt/Stirling-PDF/`.
 You must also move the Script folder within the Stirling-PDF repo that you have downloaded to this directory.
-This folder is required for the python scripts using OpenCV
+This folder is required for the python scripts using OpenCV.
 
 ```bash
 sudo mkdir /opt/Stirling-PDF &&\
@@ -129,19 +148,27 @@ sudo mv ./build/libs/Stirling-PDF-*.jar /opt/Stirling-PDF/ &&\
 sudo mv scripts /opt/Stirling-PDF/ &&\
 echo "Scripts installed."
 ```
+
+For non-root users, you can just keep the jar in the main directory of Stirling-PDF using the following command:
+```bash
+mv ./build/libs/Stirling-PDF-*.jar ./Stirling-PDF-*.jar
+```
+
 ### Step 6: Other files
 #### OCR
 If you plan to use the OCR (Optical Character Recognition) functionality, you might need to install language packs for Tesseract if running non-english scanning.
 
 ##### Installing Language Packs
-Easiest is to use the langpacks provided by your repositories. Skip the other steps
+Easiest is to use the langpacks provided by your repositories. Skip the other steps.
+
+**Note:** Nix Package Manager pre-installs almost all the packages by default.
 
 Manual:
 
 1. Download the desired language pack(s) by selecting the `.traineddata` file(s) for the language(s) you need.
 2. Place the `.traineddata` files in the Tesseract tessdata directory: `/usr/share/tessdata`
-3.
-Please view  [OCRmyPDF install guide](https://ocrmypdf.readthedocs.io/en/latest/installation.html) for more info.
+3. Please view  [OCRmyPDF install guide](https://ocrmypdf.readthedocs.io/en/latest/installation.html) for more info.
+
 **IMPORTANT:** DO NOT REMOVE EXISTING `eng.traineddata`, IT'S REQUIRED.
 
 Debian based systems, install languages with this command:
@@ -171,14 +198,30 @@ dnf search -C tesseract-langpack-
 rpm -qa | grep tesseract-langpack | sed 's/tesseract-langpack-//g'
 ```
 
+Nix:
+
+```bash
+nix-env -iA nixpkgs.tesseract
+```
+
 ### Step 7: Run Stirling-PDF
 
+Those who have pushed to the root directory, run the following commands:
+
 ```bash
 ./gradlew bootRun
 or
 java -jar /opt/Stirling-PDF/Stirling-PDF-*.jar
 ```
 
+Non-root users can run from the Stirling-PDF directory using the following commands:
+
+```bash
+./gradlew bootRun
+or
+java -jar ./Stirling-PDF-*.jar
+```
+
 ### Step 8: Adding a Desktop icon
 
 This will add a modified Appstarter to your Appmenu.
@@ -202,7 +245,19 @@ EOF
 
 Note: Currently the app will run in the background until manually closed.
 
-### Optional: Run Stirling-PDF as a service
+### Optional: Changing the host and port of the application:
+
+To override the default configuration, you can add the following to `/.git/Stirling-PDF/configs/custom_settings.yml` file:
+
+```bash
+server:
+  host: 0.0.0.0
+  port: 3000
+```
+
+**Note:** This file is created after the first application launch. To have it before that, you can create the directory and add the file yourself.
+
+### Optional: Run Stirling-PDF as a service (requires root).
 
 First create a .env file, where you can store environment variables:
 ```
@@ -239,6 +294,7 @@ WantedBy=multi-user.target
 ```
 
 Notify systemd that it has to rebuild its internal service database (you have to run this command every time you make a change in the service file):
+
 ```
 sudo systemctl daemon-reload
 ```