Task: Add docker container inside alpine linux for docker image and github workflows

Dockerfile

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+FROM cubetiq/calpine-os-linux:latest
+LABEL maintainer="sombochea@cubetiqs.com"
+
+RUN apk add --no-cache \
+		ca-certificates \
+		openssh-client
+
+RUN [ ! -e /etc/nsswitch.conf ] && echo 'hosts: files dns' > /etc/nsswitch.conf
+
+ENV DOCKER_VERSION 20.10.7
+
+RUN set -eux; \
+	\
+	apkArch="$(apk --print-arch)"; \
+	case "$apkArch" in \
+		'x86_64') \
+			url='https://download.docker.com/linux/static/stable/x86_64/docker-${DOCKER_VERSION}.tgz'; \
+			;; \
+		'armhf') \
+			url='https://download.docker.com/linux/static/stable/armel/docker-${DOCKER_VERSION}.tgz'; \
+			;; \
+		'armv7') \
+			url='https://download.docker.com/linux/static/stable/armhf/docker-${DOCKER_VERSION}.tgz'; \
+			;; \
+		'aarch64') \
+			url='https://download.docker.com/linux/static/stable/aarch64/docker-${DOCKER_VERSION}.tgz'; \
+			;; \
+		*) echo >&2 "error: unsupported architecture ($apkArch)"; exit 1 ;; \
+	esac; \
+	\
+	wget -O docker.tgz "$url"; \
+	\
+	tar --extract \
+		--file docker.tgz \
+		--strip-components 1 \
+		--directory /usr/local/bin/ \
+	; \
+	rm docker.tgz; \
+	\
+	dockerd --version; \
+	docker --version
+
+COPY modprobe.sh /usr/local/bin/modprobe
+COPY docker-entrypoint.sh /usr/local/bin/
+RUN chmod +x /usr/local/bin/docker-entrypoint.sh
+RUN chmod +x /usr/local/bin/modprobe
+
+ENV DOCKER_TLS_CERTDIR=/certs
+RUN mkdir /certs /certs/client && chmod 1777 /certs /certs/client
+
+ENTRYPOINT ["docker-entrypoint.sh"]
+CMD ["sh"]