Dockerfile: use upstream dnsjit pkg and remove obsolete deps

Dockerfile

@@ -1,35 +1,26 @@
 FROM ubuntu:focal
 ENV DEBIAN_FRONTEND=noninteractive
 RUN \
+	apt-get update -qq && \
+	apt-get install -y -qqq software-properties-common && \
+	add-apt-repository -y ppa:dns-oarc/dnsjit && \
 	apt-get update -qq && \
 	apt-get install -y -qqq \
+		dnsjit \
+		dnsjit-dev \
 		python3 \
 		python3-pip \
 		tshark \
 		jq \
-		libck-dev \
-		libluajit-5.1-dev \
-		libpcap-dev \
-		liblmdb-dev \
-		libgnutls28-dev \
 		libnghttp2-dev \
 		luajit \
 		libuv1-dev \
-		libgoogle-perftools-dev \
 		make \
 		automake \
 		libtool \
 		pkg-config \
 		git && \
 	rm -rf /var/lib/apt/lists/*
-RUN \
-	git clone https://github.com/DNS-OARC/dnsjit.git && \
-	cd dnsjit && \
-	./autogen.sh && \
-	./configure && \
-	make && \
-	make install && \
-	cd ..
 
 COPY . /shotgun
 WORKDIR /shotgun