Add earthfile and ci

Earthfile

@@ -0,0 +1,39 @@
+VERSION 0.7
+FROM node:20-alpine3.18
+WORKDIR /build
+
+project:
+   COPY . .
+   RUN yarn install
+
+build:
+   FROM +project
+
+   RUN yarn build
+
+   SAVE ARTIFACT /build/Backend/lib /Backend
+   SAVE ARTIFACT /build/Frontend/build /Frontend
+   SAVE ARTIFACT /build/FrontendLegacy/out /FrontendLegacy
+
+docker-multi:
+   BUILD +build
+   BUILD --platform linux/amd64 --platform linux/arm64 +docker
+
+docker:
+   FROM +project
+
+#   RUN apk add --no-cache caddy supervisor
+
+#   COPY ./supervisord.conf /etc/supervisord.conf
+   
+   COPY +build/Backend /build/Backend/lib
+   COPY +build/Frontend /build/Frontend/build
+   COPY +build/FrontendLegacy /build/FrontendLegacy/out
+
+   WORKDIR /build/Backend
+
+   ENTRYPOINT ["node", "lib/index.js"]
+
+   ARG EARTHLY_TARGET_TAG
+   ARG TAG=$EARTHLY_TARGET_TAG
+   SAVE IMAGE --push git.hibas.dev/openserver/openauth:$TAG