[chore] Add Dockerfile for OpenShift containerized test execution on …

…Prow CI. (#1865)

tests/e2e-openshift/Dockerfile

@@ -0,0 +1,22 @@
+# The Dockerfile's resulting image is purpose-built for executing OpenTelemetry Operator e2e tests within the OpenShift release (https://github.com/openshift/release) using Prow CI. 
+
+FROM golang:1.20
+
+# Copy the repository files
+COPY . /tmp/opentelemetry-operator
+
+WORKDIR /tmp
+
+# Install kuttl
+RUN curl -L -o kuttl https://github.com/kudobuilder/kuttl/releases/download/v0.15.0/kubectl-kuttl_0.15.0_linux_x86_64 \
+    && chmod +x kuttl \
+    && mv kuttl /usr/local/bin/kuttl
+
+# Install kubectl and oc
+RUN curl -L -o oc.tar.gz https://mirror.openshift.com/pub/openshift-v4/x86_64/clients/ocp/latest/openshift-client-linux.tar.gz \
+    && tar -xvzf oc.tar.gz \
+    && chmod +x kubectl oc \
+    && mv oc kubectl /usr/local/bin/
+
+# Set the working directory
+WORKDIR /tmp/opentelemetry-operator