Added Dockerfile and entrypoint

Dockerfile

@@ -0,0 +1,53 @@
+FROM docker:18.09
+
+ARG GO_VERSION
+ARG OPERATOR_SDK_VERSION
+ARG MINIKUBE_VERSION
+
+ARG GOPATH="/go"
+
+RUN mkdir -p /go
+
+# Stage 1 - Install dependencies
+RUN apk update && \
+    apk add --no-cache \
+            curl \
+            python \
+            py-crcmod \
+            bash \
+            libc6-compat \
+            openssh-client \
+            git \
+            make \
+            gcc \
+            libc-dev \
+            git
+
+RUN curl -O https://storage.googleapis.com/golang/go$GO_VERSION.linux-amd64.tar.gz && tar -xvf go$GO_VERSION.linux-amd64.tar.gz
+
+# Stage 2 - Install operator-sdk
+RUN echo $GOPATH/bin/operator-sdk
+RUN curl -L https://github.com/operator-framework/operator-sdk/releases/download/v$OPERATOR_SDK_VERSION/operator-sdk-v$OPERATOR_SDK_VERSION-x86_64-linux-gnu -o $GOPATH/bin/operator-sdk \
+    && chmod +x $GOPATH/bin/operator-sdk
+
+RUN curl -Lo minikube https://storage.googleapis.com/minikube/releases/v$MINIKUBE_VERSION/minikube-linux-amd64 \
+    && chmod +x minikube \
+    && cp minikube /usr/local/bin/ \
+    && rm minikube
+
+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 \
+    && chmod +x ./kubectl \
+    && mv ./kubectl /usr/local/bin/kubectl
+
+RUN export GO111MODULE=auto
+
+RUN mkdir -p $GOPATH/src/github.com/jenkinsci/kubernetes-operator
+ADD . $GOPATH/src/github.com/jenkinsci/kubernetes-operator
+WORKDIR $GOPATH/src/github.com/jenkinsci/kubernetes-operator
+
+RUN mkdir -p /home/builder
+
+ENV DOCKER_TLS_VERIFY   1
+ENV DOCKER_CERT_PATH    /minikube/certs
+
+ENTRYPOINT ["./entrypoint.sh"]

entrypoint.sh

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+#!/bin/bash
+
+export GOPATH=/go
+export PATH=$PATH:/usr/local/go/bin:$GOPATH/bin
+export GO111MODULE=on
+
+kubectl config set-cluster minikube --server=https://$MINIKUBE_IP:8443 \
+      --certificate-authority=/minikube/ca.crt && \
+    kubectl config set-credentials minikube --certificate-authority=/root/.minikube/ca.crt \
+      --client-key=/minikube/client.key \
+      --client-certificate=/minikube/client.crt && \
+    kubectl config set-context minikube --cluster=minikube --user=minikube && \
+    kubectl config use-context minikube
+
+make go-dependencies
+ln -s $GOPATH/src/github.com/jenkinsci/kubernetes-operator/vendor/k8s.io $GOPATH/src/k8s.i
+ln -s $GOPATH/src/github.com/jenkinsci/kubernetes-operator/vendor/sigs.k8s.io $GOPATH/src/sigs.k8s.io
+
+bash