Updated README with roadmap info

README.md

@@ -13,10 +13,26 @@ Developer Resources:
 - [WebCalendar-Database.html](http://htmlpreview.github.io/?https://github.com/craigk5n/webcalendar/blob/master/docs/WebCalendar-Database.html)
 - [WebCalendar-DeveloperGuide.html](http://htmlpreview.github.io/?https://github.com/craigk5n/webcalendar/blob/master/docs/WebCalendar-DeveloperGuide.html)
 
+## Roadmap
+
+### v1.9.X
+- Clean up bugs
+- Resolve any PHP 8 issues
+- New installer
+- Better support for running as a container
+- Improve translations for most popular languages (using new tools/complete-translation.py.)
+- Testing/validation of databases other than MySQL (which has received most of the attention)
+
+### v2.0.X
+- Stable release based on the v1.9 releases
+
+### v2.1.X
+- Add support for database caching with Redis
+
 ## Installation Instructions
 
 After unzipping your files (or transferring the files to your hosting
-provider, you will need to go to the web-based install script.
+provider), you will need to go to the web-based install script.
 If your files are installed in a "webcalendar" folder under your parent
 web server document root, you can access the script by going to:
 
@@ -32,10 +48,44 @@ the shell:
 php webcalendar/install/headless.php
 ```
 
-You must create `includes/settings.php` yourself before running the headless
-install script.
+### Option 1: settings.php
+
+You should create an empty `includes/settings.php` yourself before running the headless
+install script that the web service process has write permissions to.
+
+### Option 2: Environment Variables
+
+Instead of using the `includes/settings.php` file for your settings, you can use environment
+variables instead. 
+This is primarily targeted towards those running WebCalendar in containers (docker, AWS Fargate, etc)
+where it's easier to pass in environment settings than to write to a config file on a container. 
+You can do this with the docker-compose file if you are using docker.
+If you want to do this with a standard Web Server,
+you can set the evironment variables within your web server's configuration. 
+Depending on your web server, there may be more than one way to do this.  You could
+do this in your `php.ini` file, but those env vars would be available to all PHP apps
+on the server.  A better solution would be to setup a `.htaccess` file in your
+WebCalendar directory that looked something like:
+
+```
+SetEnv WEBCALENDAR_USE_ENV true
+SetEnv WEBCALENDAR_INSTALL_PASSWORD "da1437a2c74ee0b35eed71e27d00c618"
+SetEnv WEBCALENDAR_DB_TYPE mysqli
+SetEnv WEBCALENDAR_DB_DATABASE webcalendar
+SetEnv WEBCALENDAR_DB_LOGIN webcalendar
+SetEnv WEBCALENDAR_DB_PASSWORD "ChangeThisPassword"
+SetEnv WEBCALENDAR_DB_HOST db
+SetEnv WEBCALENDAR_DB_PERSISTENT true
+SetEnv WEBCALENDAR_USER_INC user.php
+SetEnv WEBCALENDAR_MODE prod
+```
+
+Note: Don't forget to enable mod_env for Apache for this to work, and to allow access to environment variables from PHP:
+```
+php_value expose_php ON
+```
 
-## Running WebCalendar with Docker (PHP 8.1)
+## Running WebCalendar with Docker
 You can use a prebuilt WebCalendar image rather than building it yourself locally.
 You will need to shell into the MariaDb container to grant access.
 Because we also need a database, we use a local network with WebCalendar
@@ -95,33 +145,6 @@ files in the container.
   Be sure to use the same MariaDb credentials specified above
   (Password _WebCalendar.1_ and Database Name _webcalendar_php8_.)
 
-## Setting Up a Docker Dev Environment (PHP 7.4)
-
-You can setup a docker environment with PHP 7.4 and MariaDb with a few
-steps.
-
-- Build the docker container with `docker-compose -f docker-compose-php7.yml build`
-- Start the containers with `docker-compose -f docker-compose-php7.yml up`
-- In order to grant the proper permissions inside of MariaDb, you
-  will need to run a few MySQL commands.  First shell into the mariadb
-  container: `docker-compose exec db /bin/sh`
-- Start up the db client: `/bin/mariadb -p` (the password will be
-  "Webcalendar.1" as specified in the `docker-compose-php7.yml' file.  You
-  can change it to make your dev environment more secure (before you
-  build the containers in step above).
-- Run the following db commands:
-  ```
-  GRANT ALL PRIVILEGES ON *.* TO webcalendar@localhost IDENTIFIED BY 'Webcalendar.1' WITH GRANT OPTION;
-  FLUSH PRIVILEGES;
-  QUIT
-  ```
-- Start up your web browser and go to:
-  [http://localhost:8080/](http://localhost:8080/).
-- Follow the guided web-based setup and choose "mysqli" as the database
-  type.
-  Be sure to use the same MariaDb credentials specified above
-  (Password _WebCalendar.1_ and Database Name _webcalendar_.)
-
 ## Integrating WebCalendar with External Applications
 
 Web Calendar can be configured to pull user and configuration data from an external application. This