Dockerfile

FROM ubuntu:18.04

# Update and download dependencies
RUN apt-get update --fix-missing
RUN apt-get install -y libssl-dev curl iputils-ping jq wget gettext-base

# Download Docker for container builds on Kubernetes
ENV DOCKER_CHANNEL stable
ENV DOCKER_VERSION 19.03.11
RUN wget -O docker.tgz "https://download.docker.com/linux/static/${DOCKER_CHANNEL}/x86_64/docker-${DOCKER_VERSION}.tgz" && \
    tar --extract --file docker.tgz --strip-components 1 --directory /usr/local/bin/ && \
    rm docker.tgz

# Directory for runner to operate in
RUN mkdir ./actions-runner
WORKDIR /home/actions-runner

# Download Actions runner
# https://github.com/terraform-google-modules/terraform-google-github-actions-runners/blob/598a38a72b7bbaf56be431c07de04752c521fd60/examples/gh-runner-gke-dind/Dockerfile#L28-L31
ARG GH_RUNNER_VERSION="2.263.0"
RUN curl -o actions.tar.gz --location "https://github.com/actions/runner/releases/download/v${GH_RUNNER_VERSION}/actions-runner-linux-x64-${GH_RUNNER_VERSION}.tar.gz" && \
    tar -zxf actions.tar.gz && \
    rm -f actions.tar.gz

# Install kubectl
RUN curl -LO https://storage.googleapis.com/kubernetes-release/release/`curl -s https://storage.googleapis.com/kubernetes-release/release/stable.txt`/bin/linux/amd64/kubectl
RUN chmod +x ./kubectl
RUN mv ./kubectl /usr/local/bin/kubectl

# Install Argo CLI
RUN curl -sLO https://github.com/argoproj/argo/releases/download/v2.8.1/argo-linux-amd64
RUN chmod +x argo-linux-amd64
RUN mv ./argo-linux-amd64 /usr/local/bin/argo

# Install dependencies
RUN ./bin/installdependencies.sh

# Allow runner to run as root
ENV RUNNER_ALLOW_RUNASROOT=1

COPY startup.sh .

ENTRYPOINT ["./startup.sh"]