GHW for building and publishing docker images (#1391)

* add ghw and scripts for docker image deployment

* debug

* add permissions for content

* fix path to the bin folder

* add tags

* rename env

* fix path to docker file

* make polkadot-parachain executable

* fix typo

* fix more typos

* test

* revert back  use of  working directory

* mke bin executable in the artifacts folder

* use cd instead of working directory

* change path to cash

* fix path to cash

* change cache key

* delete old flows

* addressed PR comments

* fix path

* reorg docker files

docker/dockerfiles/staking-miner/staking-miner_builder.Dockerfile

@@ -0,0 +1,46 @@
+FROM paritytech/ci-linux:production as builder
+
+# metadata
+ARG VCS_REF
+ARG BUILD_DATE
+ARG IMAGE_NAME="staking-miner"
+ARG PROFILE=release
+
+LABEL description="This is the build stage. Here we create the binary."
+
+WORKDIR /app
+COPY . /app
+RUN cargo build --locked --$PROFILE --package staking-miner
+
+# ===== SECOND STAGE ======
+
+FROM docker.io/library/ubuntu:20.04
+LABEL description="This is the 2nd stage: a very small image where we copy the binary."
+LABEL io.parity.image.authors="devops-team@parity.io" \
+	io.parity.image.vendor="Parity Technologies" \
+	io.parity.image.title="${IMAGE_NAME}" \
+	io.parity.image.description="${IMAGE_NAME} for substrate based chains" \
+	io.parity.image.source="https://github.com/paritytech/polkadot/blob/${VCS_REF}/scripts/ci/dockerfiles/${IMAGE_NAME}/${IMAGE_NAME}_builder.Dockerfile" \
+	io.parity.image.revision="${VCS_REF}" \
+	io.parity.image.created="${BUILD_DATE}" \
+	io.parity.image.documentation="https://github.com/paritytech/polkadot/"
+
+ARG PROFILE=release
+COPY --from=builder /app/target/$PROFILE/staking-miner /usr/local/bin
+
+RUN useradd -u 1000 -U -s /bin/sh miner && \
+	rm -rf /usr/bin /usr/sbin
+
+# show backtraces
+ENV RUST_BACKTRACE 1
+
+USER miner
+
+ENV SEED=""
+ENV URI="wss://rpc.polkadot.io"
+ENV RUST_LOG="info"
+
+# check if the binary works in this container
+RUN /usr/local/bin/staking-miner --version
+
+ENTRYPOINT [ "/usr/local/bin/staking-miner" ]

docker/dockerfiles/staking-miner/staking-miner_injected.Dockerfile

@@ -0,0 +1,43 @@
+FROM docker.io/library/ubuntu:20.04
+
+# metadata
+ARG VCS_REF
+ARG BUILD_DATE
+ARG IMAGE_NAME="staking-miner"
+
+LABEL io.parity.image.authors="devops-team@parity.io" \
+	io.parity.image.vendor="Parity Technologies" \
+	io.parity.image.title="${IMAGE_NAME}" \
+	io.parity.image.description="${IMAGE_NAME} for substrate based chains" \
+	io.parity.image.source="https://github.com/paritytech/polkadot/blob/${VCS_REF}/scripts/ci/dockerfiles/${IMAGE_NAME}/${IMAGE_NAME}_injected.Dockerfile" \
+	io.parity.image.revision="${VCS_REF}" \
+	io.parity.image.created="${BUILD_DATE}" \
+	io.parity.image.documentation="https://github.com/paritytech/polkadot/"
+
+# show backtraces
+ENV RUST_BACKTRACE 1
+
+# install tools and dependencies
+RUN apt-get update && \
+	DEBIAN_FRONTEND=noninteractive apt-get install -y \
+		libssl1.1 \
+		ca-certificates && \
+# apt cleanup
+	apt-get autoremove -y && \
+	apt-get clean && \
+	find /var/lib/apt/lists/ -type f -not -name lock -delete; \
+	useradd -u 1000 -U -s /bin/sh miner
+
+# add binary to docker image
+COPY ./staking-miner /usr/local/bin
+
+USER miner
+
+ENV SEED=""
+ENV URI="wss://rpc.polkadot.io"
+ENV RUST_LOG="info"
+
+# check if the binary works in this container
+RUN /usr/local/bin/staking-miner --version
+
+ENTRYPOINT [ "/usr/local/bin/staking-miner" ]