update README.md

Author: blmdxiao

.gitignore

@@ -5,6 +5,8 @@ __pycache__/
 
 *~
 
+.DS_Store
+
 # C extensions
 *.so
 

Dockerfile

@@ -8,7 +8,7 @@ WORKDIR /app
 COPY . /app
 
 # Install any needed packages specified in requirements.txt
-RUN pip install -r requirements.txt
+RUN pip install --no-cache-dir -r requirements.txt
 
 # Grant execution permissions to the start-up script
 RUN chmod a+x start.sh

README.md

@@ -27,6 +27,7 @@ cp env_template .env
 The variables in .env
 
 ```shell
+DISKCACHE_DIR="diskcache_dir"
 SQLITE_DB_DIR="sqlite_dir"
 SQLITE_DB_NAME="mydatabase.sqlite3"
 MAX_CRAWL_PARALLEL_REQUEST=5