Add Dockerfile

For local builds, for testing / debug, it could be useful to have a
docker image.
Let's introduce that here

Change-Id: I5c8438b4d144faa0135933826c3eb55a722272b3
Signed-off-by: Arnaud M <arnaud.morin@gmail.com>

build-docker.sh

@@ -0,0 +1,3 @@
+#!/bin/bash
+
+sudo docker build -t openstack-mistral:latest -f tools/docker/Dockerfile .

tools/docker/Dockerfile

@@ -0,0 +1,39 @@
+#
+# Builder
+#
+
+FROM debian:bookworm-slim AS builder
+LABEL maintainer="Arnaud Morin <arnaud.morin@gmail.com>"
+
+RUN apt-get update && apt-get install -y \
+    python3 python3-venv python3-pip git \
+    && rm -rf /var/lib/apt/lists/*
+
+# Create venv
+WORKDIR /opt/openstack/
+RUN python3 -m venv mistral && \
+    /opt/openstack/mistral/bin/pip install --upgrade pip setuptools
+
+# Copy source code
+WORKDIR /src/mistral
+COPY . .
+
+# Install mistral
+RUN /opt/openstack/mistral/bin/pip install -r requirements.txt && \
+    /opt/openstack/mistral/bin/pip install .
+
+#
+# Runner
+#
+FROM debian:bookworm-slim
+LABEL maintainer="Arnaud Morin <arnaud.morin@gmail.com>"
+
+RUN apt-get update && apt-get install -y \
+    python3 \
+    && rm -rf /var/lib/apt/lists/*
+
+COPY --from=builder /opt/openstack/mistral /opt/openstack/mistral
+
+RUN ln -s /opt/openstack/mistral/bin/mistral-server /usr/local/bin/
+
+USER root