Adding link to Drone environment variables reference.

Reviewed-on: #42
Reviewed-by: Alexey Skobkin <skobkin-ru@ya.ru>

.dockerignore

@@ -14,4 +14,4 @@ README.md
 
 # Environment
 .env
-.env.dist
+.env.dist

.gitignore

@@ -6,4 +6,4 @@
 /__pycache__
 
 # Environment
-.env
+.env

Dockerfile

@@ -8,6 +8,11 @@ RUN pip install -r requirements.txt
 
 ENV PYTHONUNBUFFERED=1
 
+# App settings
+ENV RSSBOT_DSN=xxx
+ENV RSSBOT_TG_TOKEN=xxx
+ENV LOG_LEVEL=INFO
+
 # App settings
 # https://www.postgresql.org/docs/current/libpq-connect.html#LIBPQ-CONNSTRING
 ENV RSSBOT_DSN=postgres://username:password@hostname/database_name

README.md

@@ -45,27 +45,41 @@ export RSSBOT_DSN=xxx
 python update.py
 ```
 
-## Runnig the bot with Docker
+## Running prebuild Docker Image
 
+### Running the bot
 ```shell
-docker build . -t tg_bot
-docker run tg_bot
+docker run -e RSSBOT_DSN=yyy RSSBOT_TG_TOKEN=xxx miroslavskaya/tg_rss_bot bot.py
 ```
 
-## Runnig the update with Docker
+### Running update
+```shell
+docker run -e RSSBOT_DSN=yyy RSSBOT_TG_TOKEN=xxx miroslavskaya/tg_rss_bot update.py
+```
+## Building and running Docker image from source
 
 ```shell
-docker run tg_bot update.py
+docker build . -t tg_rss_bot
 ```
 
-## Running the bot with docker-compose
+### Running the bot
+```shell
+docker run -e RSSBOT_DSN=yyy RSSBOT_TG_TOKEN=xxx tg_rss_bot bot.py
+```
 
+### Running update
+```shell
+docker run -e RSSBOT_DSN=yyy RSSBOT_TG_TOKEN=xxx tg_rss_bot update.py
+```
+
+## Using Docker Compose
+
+### Running the bot
 ```shell
 docker-compose up
 ```
 
-## Running the update with docker-compose
-
+### Running the update
 ```shell
 docker-compose run app update.py
-```
+```