Prepare for filtering

Dockerfile

@@ -37,7 +37,7 @@ ENV RUSTFLAGS "-C link-arg=-s"
 RUN apt-get update && apt-get install -qy --no-install-recommends $BUILD_DEPS && \
     curl -sSf https://sh.rustup.rs | bash -s -- -y --default-toolchain nightly && \
     export PATH="$HOME/.cargo/bin:$PATH" && \
-    echo "Compiling encrypted-dns version 0.2.3" && \
+    echo "Compiling encrypted-dns version 0.2.4" && \
     cargo install encrypted-dns && \
     mkdir -p /opt/encrypted-dns/sbin && \
     mkdir -p /opt/encrypted-dns/etc/keys && \

encrypted-dns.toml.in

@@ -152,3 +152,12 @@ key_cache_capacity = 10000
 
 @TLS_PROXY_CONFIGURATION@
 
+
+
+#######################################
+#        Server-side filtering        #
+#######################################
+
+[filtering]
+
+# domain_blacklist = "/etc/domain_blacklist.txt"