devcontainer: Removed wget installation to simplify image build process

.devcontainer/slackbot/Dockerfile

@@ -5,15 +5,15 @@ RUN apt-get update -y && \
     # https://github.com/Automattic/node-canvas/wiki/Installation%3A-Ubuntu-and-other-Debian-based-systems
     apt-get install build-essential libcairo2-dev libpango1.0-dev libjpeg-dev libgif-dev librsvg2-dev -y && \
     # Install other dependencies
-    apt-get install git bash wget gnupg -y && \
+    apt-get install git bash gnupg -y && \
     # Install ngrok
     curl -sSL https://ngrok-agent.s3.amazonaws.com/ngrok.asc | tee /etc/apt/trusted.gpg.d/ngrok.asc > /dev/null && \
     echo "deb https://ngrok-agent.s3.amazonaws.com buster main" | tee /etc/apt/sources.list.d/ngrok.list && \
     apt-get update && \
     apt-get install ngrok -y && \
     # Install Puppeteer dependencies
     # https://source.chromium.org/chromium/chromium/src/+/main:chrome/installer/linux/debian/dist_package_versions.json;l=39-75;drc=df14ef63b2bc818472205e50ad32a3511db4edb2
-    wget -q -O - https://dl-ssl.google.com/linux/linux_signing_key.pub | gpg --dearmor -o /usr/share/keyrings/googlechrome-linux-keyring.gpg && \
+    curl -sSL https://dl-ssl.google.com/linux/linux_signing_key.pub | gpg --dearmor -o /usr/share/keyrings/googlechrome-linux-keyring.gpg && \
     echo "deb [arch=amd64 signed-by=/usr/share/keyrings/googlechrome-linux-keyring.gpg] http://dl.google.com/linux/chrome/deb/ stable main" | tee /etc/apt/sources.list.d/google.list && \
     apt-get update && \
     apt-get install google-chrome-stable fonts-ipafont-gothic libasound2 libatk-bridge2.0-0 libatk1.0-0 libatspi2.0-0 libc6 libcairo2 libcups2 libdbus-1-3 libdrm2 libexpat1 libgbm1 libglib2.0-0 libnspr4 libnss3 libpango-1.0-0 libpangocairo-1.0-0 libstdc++6 libudev1 libuuid1 libx11-6 libx11-xcb1 libxcb-dri3-0 libxcb1 libxcomposite1 libxcursor1 libxdamage1 libxext6 libxfixes3 libxi6 libxkbcommon0 libxrandr2 libxrender1 libxshmfence1 libxss1 libxtst6 -y && \