Add BASIC_AUTH Option (#4)

Author: smashedr

README.md

@@ -37,6 +37,34 @@ services:
     image: your-app-image # listens on port 8000
 ```
 
+## Options
+
+| Variable     |    Default     | Description of Environment Variable |
+| :----------- | :------------: | :------------------------------------------------- |
+| SERVICE_NAME |     `app`      | Hostname (service name) of container               |
+| SERVICE_PORT |     `8000`     | Port service/container is listening on             |
+| GZIP_TYPES   |       -        | Nginx content gzip_types to compress               |
+| GZIP_LENGTH  |     `1000`     | Minimum content size to compress                   |
+| BASIC_AUTH   |       -        | Basic auth file contents                           |
+| BASIC_REALM  | `Unauthorized` | Minimum content size to compress                   |
+
+#### Basic Auth
+
+```shell
+$ htpasswd -nb user pass
+user:$apr1$XFVN0nJA$IgZxtMHVAeA.Pu7ufU7/I0
+```
+
+Replace all `$` with `$$` for docker-compose.yaml files.  
+Use `\n` for newlines to add multiple credentials.
+
+```yaml
+environment:
+  BASIC_AUTH: 'user:$apr1$XFVN0nJA$IgZxtMHVAeA.Pu7ufU7/I0\nuser2:$apr1$vswJgdwo$2XkDOrvJFQ2pKwrXqGeWM0'
+```
+
+AI is Retarded.
+
 ## Examples
 
 If your app container is called `app` and listens on `3000` this will reverse proxy it to the `PORT` exposed on nginx.

src/10-update-config.sh

@@ -17,12 +17,21 @@ if [ -n "${GZIP_TYPES}" ];then
 echo "GZIP_TYPES: ${GZIP_TYPES}"
 cat <<EOF > /etc/nginx/conf.d/http.gzip.conf
 gzip            on;
-gzip_min_length 1000;
 gzip_proxied    any;
+gzip_min_length ${GZIP_LENGTH:-1000};
 gzip_types      ${GZIP_TYPES};
 EOF
 fi
 
+if [ -n "${BASIC_AUTH}" ];then
+echo "BASIC_AUTH: ${BASIC_AUTH}"
+printf '%s' "${BASIC_AUTH}" > /etc/nginx/auth.users
+cat <<EOF > /etc/nginx/conf.d/location.auth.conf
+auth_basic            "${BASIC_REALM:-Unauthorized}";
+auth_basic_user_file  /etc/nginx/auth.users;
+EOF
+fi
+
 echo "${0} - Done"
 
 nginx -version ||:

src/nginx.conf

@@ -41,6 +41,7 @@ http {
             proxy_set_header    X-Forwarded-Host $server_name;
             proxy_set_header    Upgrade $http_upgrade;
             proxy_set_header    Connection "upgrade";
+            include             /etc/nginx/conf.d/location.*;
         }
     }
 }