refactor build script.

apps/google-chrome/Dockerfile

@@ -0,0 +1,21 @@
+ARG BASE_IMAGE=m1k1o/neko:base
+FROM $BASE_IMAGE
+
+ARG SRC_URL="https://dl.google.com/linux/direct/google-chrome-stable_current_amd64.deb"
+
+#
+# install google chrome
+RUN set -eux; apt-get update; \
+    wget -O /tmp/google-chrome.deb "${SRC_URL}"; \
+    apt-get install -y --no-install-recommends openbox /tmp/google-chrome.deb; \
+    #
+    # clean up
+    apt-get clean -y; \
+    rm -rf /var/lib/apt/lists/* /var/cache/apt/*
+
+#
+# copy configuation files
+COPY supervisord.conf /etc/neko/supervisord/google-chrome.conf
+COPY --chown=neko preferences.json /home/neko/.config/google-chrome/Default/Preferences
+COPY policies.json /etc/opt/chrome/policies/managed/policies.json
+COPY openbox.xml /etc/neko/openbox.xml