Updated XNAT references to v1.8.2. Addressed #70 by moving .env file …

…to default.env. This matches the pattern used on the dependency-mgmt branch.

.gitignore

@@ -13,7 +13,6 @@ gradle.properties
 
 # Ignore log and env files, as well as mounted data folders and plugin folders.
 *.log
-*.env
 *-data/
 xnat/plugins
 

README.md

@@ -38,15 +38,20 @@ $ git clone https://github.com/NrgXnat/xnat-docker-compose
 $ cd xnat-docker-compose
 ```
 
-2. Configurations: The default configuration is sufficient to run the deployment. The following files can be modified if you want to change the default configuration
+2. Set Docker enviroment variables: Default and sample enviroment variables are provided in the default.env file. Add these variables to your environment or simply copy `default.env` to `.env` . Values in this file are used to populate dollar-notation variables in the docker-compose.yml file.
+```
+$ cp default.env .env
+```
+
+3. Configurations: The default configuration is sufficient to run the deployment. The following files can be modified if you want to change the default configuration
 
     - **docker-compose.yml**: How the different containers are deployed. There is a section of build arguments (under `services → xnat-web → build → args`) to control some aspects of the build.
         * If you want to download a different version of XNAT, you can change the `XNAT_VER` variable to some other release.
         * The `TOMCAT_XNAT_FOLDER` build argument is set to `ROOT` by default; this means the XNAT will be available at `http://localhost`. If, instead, you wish it to be at `http://localhost/xnat` or, more generally, at `http://localhost/{something}`, you can set `TOMCAT_XNAT_FOLDER` to the value `something`.
         * If you need to control some arguments that get sent to tomcat on startup, you can modify the `CATALINA_OPTS` environment variable (under `services → xnat-web → environment`).
     - **xnat/Dockerfile**: Builds the xnat-web image from a tomcat docker image.
 
-3. Start the system
+4. Start the system
 
 ```
 $ docker-compose up -d
@@ -81,7 +86,7 @@ xnat-web_1    | INFO: Server startup in 84925 ms
 ```
 
 
-4. First XNAT Site Setup
+5. First XNAT Site Setup
 
 Your XNAT will soon be available at http://localhost. 
 
@@ -110,7 +115,7 @@ These variables directly set options for XNAT itself.
 
 Variable | Description | Default value
 -------- | ----------- | -------------
-XNAT_VERSION | Indicates the version of XNAT to install. | 1.8.1
+XNAT_VERSION | Indicates the version of XNAT to install. | 1.8.2
 XNAT_MIN_HEAP | Indicates the minimum heap size for the Java virtual machine. | 256m
 XNAT_MAX_HEAP | Indicates the maximum heap size for the Java virtual machine. | 4g
 XNAT_SMTP_ENABLED | Indicates whether SMTP operations are enabled in XNAT. | false

.env → default.env

@@ -1,4 +1,4 @@
-XNAT_VER=1.8.1
+XNAT_VER=1.8.2
 XNAT_MIN_HEAP=256m
 XNAT_MAX_HEAP=4g
 XNAT_SMTP_ENABLED=false