diff --git a/docker/ubuntu14.04/Dockerfile b/docker/ubuntu14.04/Dockerfile
deleted file mode 100644
index f4e8a04104..0000000000
--- a/docker/ubuntu14.04/Dockerfile
+++ /dev/null
@@ -1,42 +0,0 @@
-FROM ubuntu:14.04
-ENV DEBIAN_FRONTEND noninteractive
-
-## Update cache and upgrade image
-RUN apt-get -y update && apt-get -y upgrade && apt-get -y dist-upgrade
-
-## Build environment packages
-RUN apt-get install -qq -y --ignore-missing \
-	apt-utils		\
-	automake		\
-	bc                      \
-	build-essential		\
-	bzip2			\
-	cmake			\
-	curl			\
-	git			\
-	libcurl4-openssl-dev	\
-	libssl-dev		\
-	make			\
-	pkg-config		\
-	python			\
-	sudo			\
-	tar			\
-	zip			\
-	unzip			\
-	wget			\
-	zlib1g-dev
-
-RUN mkdir -p /usr/local/bin
-
-## Install cmake since it's an expensive operation and best be done once
-COPY ./setup-cmake.sh /usr/local/bin/setup-cmake.sh
-RUN chmod +x /usr/local/bin/setup-cmake.sh
-RUN /usr/local/bin/setup-cmake.sh
-
-## Install protobuf3 since Ubuntu 14.04 does not have protobuf3
-COPY ./setup-protobuf.sh /usr/local/bin/setup-protobuf.sh
-RUN chmod +x /usr/local/bin/setup-protobuf.sh
-RUN /usr/local/bin/setup-protobuf.sh
-
-# ENTRYPOINT bash
-CMD /bin/bash
diff --git a/docker/ubuntu16.04/Dockerfile b/docker/ubuntu16.04/Dockerfile
deleted file mode 100644
index 328600f1cb..0000000000
--- a/docker/ubuntu16.04/Dockerfile
+++ /dev/null
@@ -1,38 +0,0 @@
-FROM ubuntu:16.04
-ENV DEBIAN_FRONTEND noninteractive
-
-## Update cache and upgrade image
-RUN apt-get -y update && apt-get -y upgrade && apt-get -y dist-upgrade
-
-## Build environment packages
-RUN apt-get install -qq -y --ignore-missing \
-	apt-utils		\
-	automake		\
-	build-essential		\
-	bc                      \
-	bzip2			\
-	cmake			\
-	curl			\
-	git			\
-	libcurl4-openssl-dev	\
-	libsqlite3-dev		\
-	libssl-dev		\
-	libtool-bin		\
-	make			\
-	pkg-config		\
-	python			\
-	sudo			\
-	tar			\
-	zip			\
-	unzip			\
-	wget			\
-	zlib1g-dev
-
-## Install cmake since it's an expensive operation and best be done once
-RUN mkdir -p /usr/local/bin
-COPY ./setup-cmake.sh /usr/local/bin/setup-cmake.sh
-RUN chmod +x /usr/local/bin/setup-cmake.sh
-RUN /usr/local/bin/setup-cmake.sh
-
-# ENTRYPOINT bash
-CMD /bin/bash
diff --git a/docker/ubuntu18.04/Dockerfile b/docker/ubuntu18.04/Dockerfile
deleted file mode 100644
index 9e41506b4f..0000000000
--- a/docker/ubuntu18.04/Dockerfile
+++ /dev/null
@@ -1,39 +0,0 @@
-FROM ubuntu:18.04
-ENV DEBIAN_FRONTEND noninteractive
-
-## Update cache and upgrade image
-RUN apt-get -y update && apt-get -y upgrade && apt-get -y dist-upgrade
-
-## Build environment packages
-RUN apt-get install -qq -y --ignore-missing \
-	apt-utils		\
-	automake		\
-	bc                      \
-	build-essential		\
-	bzip2			\
-	cmake			\
-	curl			\
-	git			\
-	libcurl4-openssl-dev	\
-	libssl-dev		\
-	libtool-bin		\
-	make			\
-	pkg-config		\
-	protobuf-compiler	\
-	libprotobuf-dev         \
-	python			\
-	sudo			\
-	tar			\
-	zip			\
-	unzip			\
-	wget			\
-	zlib1g-dev
-
-## Install cmake since it's an expensive operation and best be done once
-RUN mkdir -p /usr/local/bin
-COPY ./setup-cmake.sh /usr/local/bin/setup-cmake.sh
-RUN chmod +x /usr/local/bin/setup-cmake.sh
-RUN /usr/local/bin/setup-cmake.sh
-
-# ENTRYPOINT bash
-CMD /bin/bash
diff --git a/docker/ubuntu20.04/Dockerfile b/docker/ubuntu20.04/Dockerfile
deleted file mode 100644
index 17dba84799..0000000000
--- a/docker/ubuntu20.04/Dockerfile
+++ /dev/null
@@ -1,39 +0,0 @@
-FROM ubuntu:20.04
-ENV DEBIAN_FRONTEND noninteractive
-
-## Update cache and upgrade image
-RUN apt-get -y update && apt-get -y upgrade && apt-get -y dist-upgrade
-
-## Build environment packages
-RUN apt-get install -qq -y --ignore-missing \
-	apt-utils		\
-	automake		\
-	bc                      \
-	build-essential		\
-	bzip2			\
-	cmake			\
-	curl			\
-	git			\
-	libcurl4-openssl-dev	\
-	libssl-dev		\
-	libtool-bin		\
-	make			\
-	pkg-config		\
-	protobuf-compiler	\
-	libprotobuf-dev         \
-	python			\
-	sudo			\
-	tar			\
-	zip			\
-	unzip			\
-	wget			\
-	zlib1g-dev
-
-## Install cmake since it's an expensive operation and best be done once
-RUN mkdir -p /usr/local/bin
-COPY ./setup-cmake.sh /usr/local/bin/setup-cmake.sh
-RUN chmod +x /usr/local/bin/setup-cmake.sh
-RUN /usr/local/bin/setup-cmake.sh
-
-# ENTRYPOINT bash
-CMD /bin/bash