feat(gateway): added first implement of the Gateway (MQTT, Influx, REST)

Signed-off-by: Klagarge <remi@heredero.ch>

gateway/Dockerfile

@@ -0,0 +1,27 @@
+FROM golang:1.23-alpine AS builder
+
+WORKDIR /app
+
+COPY ./src/go.mod ./src/go.sum ./
+RUN go mod tidy
+
+COPY ./src .
+#RUN CGO_ENABLED=0 go build -ldflags="-w -s" -o /gateway .
+RUN go build -o /gateway .
+
+
+FROM alpine:latest AS certs
+RUN apk --no-cache add ca-certificates
+
+FROM scratch AS final
+LABEL   org.opencontainers.image.authors="remi.heredero@hevs.ch" \
+        org.opencontainers.image.title="Gateway for SoftwEng course" \
+        org.opencontainers.image.description="This container is an application for the lab on SoftwEng course" \
+        org.opencontainers.image.source="https://gitlab.forge.hefr.ch/team-raclette/project-softweng/-/tree/main/gateway?ref_type=heads"
+
+COPY --from=builder /gateway /gateway
+COPY --from=certs /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/
+
+EXPOSE 8080
+
+ENTRYPOINT ["/gateway"]