refactor build script.

apps/tor-browser/Dockerfile

@@ -0,0 +1,26 @@
+ARG BASE_IMAGE=m1k1o/neko:base
+FROM $BASE_IMAGE
+
+#
+# install dependencies
+RUN set -eux; apt-get update; \
+    apt-get install -y --no-install-recommends openbox curl xz-utils file libgtk-3-0 libdbus-glib-1-2; \
+    #
+    # download TOR browser
+    DOWNLOAD_URI="$(curl -s -N https://www.torproject.org/download/ | grep -Po -m 1 '(?=(dist/torbrowser)).*(?<=.tar.xz)')"; \
+	echo "Downloading $DOWNLOAD_URI"; \
+	curl -sSL -o /tmp/tor.tar.xz "https://www.torproject.org/$DOWNLOAD_URI"; \
+    tar -xvJf /tmp/tor.tar.xz -C /opt; \
+    mv /opt/tor-browser* /opt/tor-browser_en-US; \
+    chown -R neko:neko /opt/tor-browser_en-US/; \
+    rm -f /tmp/tor.tar.xz; \
+    #
+    # clean up
+    apt-get --purge autoremove -y curl xz-utils; \
+    apt-get clean -y; \
+    rm -rf /var/lib/apt/lists/* /var/cache/apt/*;
+
+#
+# copy configuation file
+COPY supervisord.conf /etc/neko/supervisord/tor-browser.conf
+COPY openbox.xml /etc/neko/openbox.xml