# lock global
touch /tmp/install.lock

# lock
touch /tmp/install-chromedriver.lock

export DEBIAN_FRONTEND=noninteractive \
  && apt-get update \
  && apt-get install \
    unzip \
  && \
  DL=https://dl.google.com/linux/direct/google-chrome-stable_current_amd64.deb \
  && curl -sL "$DL" > /tmp/chrome.deb \
  && apt install --no-install-recommends --no-install-suggests -y \
    /tmp/chrome.deb \
  && CHROMIUM_FLAGS='--no-sandbox --disable-dev-shm-usage' \
  && sed -i '${s/$/'" $CHROMIUM_FLAGS"'/}' /opt/google/chrome/google-chrome \
  && BASE_URL=https://chromedriver.storage.googleapis.com \
  && VERSION=$(curl -sL "$BASE_URL/LATEST_RELEASE") \
  && curl -sL "$BASE_URL/$VERSION/chromedriver_linux64.zip" -o /tmp/driver.zip \
  && unzip /tmp/driver.zip \
  && chmod 755 chromedriver \
  && mv chromedriver /usr/local/bin

# unlock global
rm /tmp/install.lock

# unlock
rm /tmp/install-chromedriver.lock