xvfb 설치 안함, python 으로도 실행 가능하도록 심볼릭 링크 추가

build/Dockerfile

@@ -5,9 +5,10 @@ ENV DEBIAN_FRONTEND=noninteractive
 # 필수 패키지 설치 및 크롬 설치
 RUN apt-get update && \
     apt-get install -y --no-install-recommends \
-    python3 python3-pip cron curl unzip wget xvfb \
+    python3 python3-pip cron curl unzip wget \
     libglib2.0-0 libnss3 libgconf-2-4 libfontconfig1 libxss1 libxshmfence1 \
     libasound2 libxtst6 libappindicator3-1 fonts-liberation libu2f-udev && \
+    ln -s /usr/bin/python3 /usr/bin/python && \
     wget https://dl.google.com/linux/direct/google-chrome-stable_current_amd64.deb && \
     apt-get install -y ./google-chrome-stable_current_amd64.deb && \
     rm google-chrome-stable_current_amd64.deb && \