Assume install directory is docs/ instead of project root

.gitignore

@@ -1 +1,2 @@
 vendor
+composer.lock

README.md

@@ -1,22 +1,31 @@
 # Doctrine Docs Builder
 
 A package for generating Doctrine repo docs in a unified way. Its purpose is to abstract the underlying method away from
-the generating command. It assumes the input directory is in `docs/en` at the root of the repo (for now).
+the generating command. It assumes:
+
+- it's run from the project root, and
+- the docs reside in `docs/en/`. 
+
+It uses [phpdocumentor](https://github.com/phpDocumentor/guides) tooling for parsing the RST files.
+
+This project is considered an internal tool and therefore, you shouldn't use this project in your application. This 
+repository doesn't provide any support, and doesn't guarantee backward compatibility. Any or the entire project can 
+change, or even disappear, at any moment without prior notice.
 
 ## Usage:
 
 ```shell
-composer require --dev doctrine/docs-builder
-./vendor/bin/build-docs.sh [<output>]
+composer require --dev doctrine/docs-builder -d docs
+./docs/vendor/bin/build-docs.sh [<output>]
 ```
 
-The output directory defaults to `output` at the root of your project.
+The output directory defaults to `docs/output`.
 
 Optionally, declare a script in your root `composer.json` for convenience:
 
 ```
 "scripts": {
-    "docs": "./vendor/bin/build-docs.sh @additional_args"
+    "docs": "./docs/vendor/bin/build-docs.sh @additional_args"
 }
 ```
 

bin/build-docs.sh

@@ -1,6 +1,6 @@
 #!/usr/bin/env sh
 
-usage="$(basename "$0") [-h] [<outputDir>] -- generate the docs to given output dir [default: output]"
+usage="$(basename "$0") [-h] [<outputDir>] -- generate docs to given output dir [default: docs/output]"
 
 # shellcheck disable=SC2034
 if getopts ":h" option
@@ -9,23 +9,19 @@ then
   exit
 fi
 
-rootDir=$PWD
-
-inputDir="docs/en"
+docsRoot="$PWD/docs"
 
 outputArg="${1}"
 firstChar=$(echo "$1" | cut -c1-1)
 
 if [ "$firstChar" != "/" ] && [ "$firstChar" != "" ]
 then
-  # Output directory should be relative to working directory
-  outputArg="$rootDir/$outputArg"
+  # The output path provided is not an absolute path;
+  # therefore treat the path as relative to the working dir (project root).
+  outputArg="$docsRoot/$outputArg"
 fi
 
-defaultOutputDir="$rootDir/output"
+defaultOutputDir="$docsRoot/output"
 outputDir="${outputArg:-${defaultOutputDir:-default}}"
 
-baseDir=$(dirname "$(dirname "$0")")
-output=$(composer install -d "$baseDir" 2>&1) || print "$output"
-
-"$baseDir/vendor/bin/guides" -vvv --no-progress --fail-on-log "$rootDir/$inputDir" --output="$outputDir"
+"$docsRoot/vendor/bin/guides" -vvv --no-progress --fail-on-log "$docsRoot/en" --output="$outputDir"