Designed and implemented pinp test

Dockerfile

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+FROM docker.io/library/alpine:latest
+
+COPY ./entrypoint.sh /entrypoint.sh
+COPY ./inner/ /inner/
+
+RUN apk update && \
+    apk add iptables openrc podman podman-openrc && \
+    printf "[storage]\ndriver = \"vfs\"\n" > /etc/containers/storage.conf && \
+    chmod +x /entrypoint.sh
+
+ENTRYPOINT /entrypoint.sh

entrypoint.sh

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+echo "Outer container working"
+echo
+podman build -t inner-test /inner && \
+podman run inner-test

inner/Dockerfile

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+FROM docker.io/library/alpine:latest
+
+COPY ./entrypoint.sh /entrypoint.sh
+
+RUN chmod +x /entrypoint.sh
+
+ENTRYPOINT /entrypoint.sh

inner/entrypoint.sh

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+echo "Inner container working"
+echo
+echo "SUCCESS!"