tests: remove Dockerfile

The tests/Dockerfile was outdated (using an obsolete Ubuntu
distribution), and it's not being used by any workflow or prow job. This
Dockerfile was the only one using `scripts/install-marker.sh`, which
used a vendorized binary generated by the etcd project. This is not
needed anymore, as marker releases now provide the binaries.

Signed-off-by: Ivan Valdes <ivan@vald.es>

scripts/install-marker.sh

@@ -1,21 +0,0 @@
-#!/usr/bin/env bash
-
-set -euo pipefail
-
-ARCH=${1:-}
-
-if [ -z "$ARCH" ]; then
-    echo "Usage: ${0} [amd64 or darwin], defaulting to 'amd64'" >> /dev/stderr
-    ARCH=amd64
-fi
-
-MARKER_URL="https://storage.googleapis.com/etcd/test-binaries/marker-v0.4.0-x86_64-unknown-linux-gnu"
-if [ "${ARCH}" == "darwin" ]; then
-    MARKER_URL="https://storage.googleapis.com/etcd/test-binaries/marker-v0.4.0-x86_64-apple-darwin"
-fi
-
-echo "Installing marker"
-curl -L "${MARKER_URL}" -o "${GOPATH}"/bin/marker
-chmod 755 "${GOPATH}"/bin/marker
-
-"${GOPATH}"/bin/marker --version

tests/Dockerfile

@@ -1,50 +0,0 @@
-FROM ubuntu:21.10
-
-RUN rm /bin/sh && ln -s /bin/bash /bin/sh
-RUN echo 'debconf debconf/frontend select Noninteractive' | debconf-set-selections
-
-RUN apt-get -y update \
-  && apt-get -y install \
-  build-essential \
-  gcc \
-  apt-utils \
-  pkg-config \
-  software-properties-common \
-  apt-transport-https \
-  libssl-dev \
-  sudo \
-  bash \
-  curl \
-  wget \
-  tar \
-  git \
-  netcat \
-  libaspell-dev \
-  libhunspell-dev \
-  hunspell-en-us \
-  aspell-en \
-  shellcheck \
-  && apt-get -y update \
-  && apt-get -y upgrade \
-  && apt-get -y autoremove \
-  && apt-get -y autoclean
-
-ENV GOROOT /usr/local/go
-ENV GOPATH /go
-ENV PATH ${GOPATH}/bin:${GOROOT}/bin:${PATH}
-ENV GO_VERSION REPLACE_ME_GO_VERSION
-ENV GO_DOWNLOAD_URL https://storage.googleapis.com/golang
-RUN rm -rf ${GOROOT} \
-  && curl -s ${GO_DOWNLOAD_URL}/go${GO_VERSION}.linux-amd64.tar.gz | tar -v -C /usr/local/ -xz \
-  && mkdir -p ${GOPATH}/src ${GOPATH}/bin \
-  && go version
-
-RUN mkdir -p ${GOPATH}/src/go.etcd.io/etcd
-WORKDIR ${GOPATH}/src/go.etcd.io/etcd
-
-ADD ./scripts/install-marker.sh /tmp/install-marker.sh
-
-RUN /tmp/install-marker.sh amd64 \
-  && rm -f /tmp/install-marker.sh \
-  && curl -s https://codecov.io/bash >/codecov \
-  && chmod 700 /codecov