chore(Dockerfile): cleanup after installation a bit more than before and keep copyright / license files (#262)

Author: helgi

rootfs/Dockerfile

@@ -9,55 +9,63 @@ RUN adduser --system \
 
 COPY /bin /bin
 
-RUN apt-get update \
-	&& apt-get install -y \
-		gcc \
-		libgeoip1 \
-		libgeoip-dev \
-		libssl-dev \
-		libpcre3-dev \
-		make \
-	&& export NGINX_VERSION=1.11.4 SIGNING_KEY=A1C052F8 VTS_VERSION=0.1.10 BUILD_PATH=/tmp/build PREFIX=/opt/router \
-	&& rm -rf "$PREFIX" \
-	&& mkdir "$PREFIX" \
-	&& mkdir "$BUILD_PATH" \
-	&& cd "$BUILD_PATH" \
-	&& get_src_gpg $SIGNING_KEY \
-		"http://nginx.org/download/nginx-$NGINX_VERSION.tar.gz" \
-	&& get_src c6f3733e9ff84bfcdc6bfb07e1baf59e72c4e272f06964dd0ed3a1bdc93fa0ca \
-		"https://github.com/vozlt/nginx-module-vts/archive/v$VTS_VERSION.tar.gz" \
-	&& cd "$BUILD_PATH/nginx-$NGINX_VERSION" \
-	&& ./configure \
-	  --prefix="$PREFIX" \
-	  --pid-path=/tmp/nginx.pid \
-	  --with-debug \
-	  --with-pcre-jit \
-	  --with-ipv6 \
-	  --with-http_ssl_module \
-	  --with-http_stub_status_module \
-	  --with-http_realip_module \
-	  --with-http_auth_request_module \
-	  --with-http_addition_module \
-	  --with-http_dav_module \
-	  --with-http_geoip_module \
-	  --with-http_gzip_static_module \
-	  --with-http_sub_module \
-	  --with-http_v2_module \
-	  --with-mail \
-	  --with-mail_ssl_module \
-	  --with-stream \
-	  --add-module="$BUILD_PATH/nginx-module-vts-$VTS_VERSION" \
-	&& make \
-	&& make install \
-	&& apt-get remove -y --auto-remove --purge \
-		gcc \
-		libgeoip-dev \
-		libssl-dev \
-		libpcre3-dev \
-		make \
-	&& apt-get clean \
-	&& rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/* /usr/share/man /usr/share/doc \
-	&& rm -rf "$BUILD_PATH"
+RUN buildDeps='gcc make libgeoip-dev libssl-dev libpcre3-dev'; \
+    apt-get update && \
+    apt-get install -y --no-install-recommends \
+        $buildDeps \
+        libgeoip1 && \
+    export NGINX_VERSION=1.11.4 SIGNING_KEY=A1C052F8 VTS_VERSION=0.1.10 BUILD_PATH=/tmp/build PREFIX=/opt/router && \
+    rm -rf "$PREFIX" && \
+    mkdir "$PREFIX" && \
+    mkdir "$BUILD_PATH" && \
+    cd "$BUILD_PATH" && \
+    get_src_gpg $SIGNING_KEY "http://nginx.org/download/nginx-$NGINX_VERSION.tar.gz" && \
+    get_src c6f3733e9ff84bfcdc6bfb07e1baf59e72c4e272f06964dd0ed3a1bdc93fa0ca "https://github.com/vozlt/nginx-module-vts/archive/v$VTS_VERSION.tar.gz" && \
+    cd "$BUILD_PATH/nginx-$NGINX_VERSION" && \
+    ./configure \
+      --prefix="$PREFIX" \
+      --pid-path=/tmp/nginx.pid \
+      --with-debug \
+      --with-pcre-jit \
+      --with-ipv6 \
+      --with-http_ssl_module \
+      --with-http_stub_status_module \
+      --with-http_realip_module \
+      --with-http_auth_request_module \
+      --with-http_addition_module \
+      --with-http_dav_module \
+      --with-http_geoip_module \
+      --with-http_gzip_static_module \
+      --with-http_sub_module \
+      --with-http_v2_module \
+      --with-mail \
+      --with-mail_ssl_module \
+      --with-stream \
+      --add-module="$BUILD_PATH/nginx-module-vts-$VTS_VERSION" && \
+    make && \
+    make install && \
+    rm -rf "$BUILD_PATH" && \
+    # cleanup
+    apt-get purge -y --auto-remove $buildDeps && \
+    apt-get autoremove -y && \
+    apt-get clean -y && \
+    # package up license files if any by appending to existing tar
+    COPYRIGHT_TAR='/usr/share/copyrights.tar'; \
+    gunzip $COPYRIGHT_TAR.gz; tar -rf $COPYRIGHT_TAR /usr/share/doc/*/copyright; gzip $COPYRIGHT_TAR && \
+    rm -rf \
+        /usr/share/doc \
+        /usr/share/man \
+        /usr/share/info \
+        /usr/share/locale \
+        /var/lib/apt/lists/* \
+        /var/log/* \
+        /var/cache/debconf/* \
+        /etc/systemd \
+        /lib/lsb \
+        /lib/udev \
+        /usr/lib/x86_64-linux-gnu/gconv/IBM* \
+        /usr/lib/x86_64-linux-gnu/gconv/EBC* && \
+    bash -c "mkdir -p /usr/share/man/man{1..8}"
 
 COPY . /