diff --git a/.devcontainer/Dockerfile b/.devcontainer/Dockerfile
index e277282..48876a9 100644
--- a/.devcontainer/Dockerfile
+++ b/.devcontainer/Dockerfile
@@ -7,7 +7,6 @@ RUN sed -i 's@deb.debian.org@ftp.kaist.ac.kr@g' /etc/apt/sources.list.d/debian.s
 WORKDIR /code
 COPY crontab /code/crontab
 COPY requirements.txt /code/requirements.txt
-COPY .env /code/.env
 COPY app /code/app
 
 RUN apt update && apt -y install tzdata && \
@@ -20,10 +19,6 @@ RUN chmod 0644 /etc/cron.d/crontab
 RUN echo "" >> /etc/cron.d/crontab  # Ensure newline at end of file
 RUN /usr/bin/crontab /etc/cron.d/crontab
 
-# Setup Environment Variables
-
-RUN export $(cat .env | xargs)
-
 # Setup Python Environment
 WORKDIR /code
 RUN pip config set global.break-system-packages true
diff --git a/README.MD b/README.MD
index 105392c..4e36f1d 100644
--- a/README.MD
+++ b/README.MD
@@ -10,6 +10,6 @@
 
 **이 프로젝트는 백업을 위한 레포로 친절하게 문서를 쓸 생각이 없습니다.**
 
-`docker build --tag today-isangjeong:latest .`
+`docker build --no-cache --tag today-isangjeong:latest .`
 
 `docker run -d -v /data/hdd/today.isanjeong-docker:/code/app/temp --name today-isangjeong today-isangjeong:latest`