Build Docker image choosing oura version.

Author: adrabenche

testdrive/ourabyversion/Dockerfile

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+FROM --platform=linux/amd64 rust:1-buster as builder
+
+ARG RELEASE_TAG
+
+RUN git config --global init.defaultBranch main &&  \
+    git config --global advice.detachedHead false && \
+    git init && \
+    git remote add origin https://github.com/txpipe/oura.git && \
+    git fetch  && \
+    test -z ${RELEASE_TAG} &&  GITREV=$(git describe --tags $(git rev-list --tags --max-count=1)) || GITREV=${RELEASE_TAG}  && \
+    git checkout "${GITREV}"
+
+RUN cargo build --release --target x86_64-unknown-linux-gnu --all-features && \
+    cp /target/x86_64-unknown-linux-gnu/release/oura /oura
+
+# Run app
+FROM debian:buster-slim
+
+COPY --from=builder /oura /usr/local/bin/oura
+
+ENTRYPOINT [ "oura" ]

testdrive/ourabyversion/README.md

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+# Build Oura by version
+
+## Introduction
+
+This is a reference implementation to show how an image of _Oura_ can be built on demand; but also, sending the git revision as an argument through the command line
+
+## Prerequisites
+
+- Docker
+
+## Variables and arguments
+
+|Build Argument|Type|Default|Required|What it is|
+|---|---|---|---|---|
+|`RELEASE_TAG`|ARG|Last workin version|no|Tag number of the oura release. Follow this [link](https://github.com/txpipe/oura/tags) for reference.|
+
+
+### Build a Docker images with the latest Oura release
+```bash
+$ sudo docker build -t oura:latest .
+```
+```bash
+$ sudo docker run --rm oura:latest --version
+```
+```bash
+oura 1.3.2
+```
+
+### Build a Docker image of Oura v1.0.0
+```bash
+$ sudo docker build -t oura:v1.0.0 . \
+--build-arg RELEASE_TAG=v1.0.0
+```
+```bash
+$ sudo docker run --rm oura:v1.0.0.0 --version
+```
+```bash
+oura 1.0.0
+```