Add Dockerfile for building Azurite with Caddy support

Dockerfile

@@ -0,0 +1,26 @@
+# syntax=docker/dockerfile
+
+# Build
+FROM node:20-alpine AS build
+WORKDIR /app
+ARG AZURITE_VER=v3.35.0
+RUN apk add --no-cache git
+RUN git clone --branch "${AZURITE_VER}" --depth 1 https://github.com/Azure/Azurite.git azurite
+WORKDIR /app/azurite
+RUN npm ci
+RUN npm run build
+
+# Pull Caddy
+FROM caddy:2-alpine AS caddy
+
+# Build final image on top of Node alpine
+FROM node:20-alpine
+WORKDIR /app
+COPY --from=caddy /usr/bin/caddy /usr/bin/caddy
+COPY --from=caddy /etc/caddy /etc/caddy
+COPY --from=build /app/azurite/package*.json ./azurite/
+COPY --from=build /app/azurite/dist/src ./azurite/src
+WORKDIR /app/azurite
+RUN npm pkg set scripts.prepare="echo no-prepare"
+RUN npm ci --omit=dev --unsafe-perm
+WORKDIR /app