fix: docker files

Dockerfile.drogon

@@ -1,24 +0,0 @@
-FROM ubuntu:18.04
-
-RUN apt-get update -yqq && \
-    apt-get install -yqq --no-install-recommends \
-    software-properties-common sudo curl wget cmake locales git \
-    openssl libssl-dev libjsoncpp-dev uuid-dev zlib1g-dev postgresql-server-dev-all \
-    libmariadbclient-dev libsqlite3-dev gcc-8 g++-8 && \
-    locale-gen en_US.UTF-8
-
-ENV LANG en_US.UTF-8
-ENV LANGUAGE en_US:en
-ENV LC_ALL en_US.UTF-8
-
-ENV CC=gcc-8
-ENV CXX=g++-8
-ENV AR=gcc-ar-8
-ENV RANLIB=gcc-ranlib-8
-
-ENV IROOT=/install
-ENV DROGON_ROOT=$IROOT/drogon
-
-WORKDIR $IROOT
-ADD https://api.github.com/repos/an-tao/drogon/git/refs/heads/master version.json
-RUN git clone https://github.com/an-tao/drogon && cd drogon && ./build.sh