Move to multistage Dockerfile

scnserver/Dockerfile

@@ -1,6 +1,14 @@
+FROM golang as builder
+
+WORKDIR /repo
+COPY  . /repo
+
+RUN make build
+
 FROM debian:bookworm
 
-COPY _build/scn_backend /app/scnserver
+COPY --from=builder /repo/_build/scn_backend /app/scnserver
+
 COPY DOCKER_GIT_INFO    /app/DOCKER_GIT_INFO
 
 RUN mkdir /data

scnserver/Makefile

@@ -5,7 +5,7 @@ PORT=9090
 NAMESPACE=$(shell git rev-parse --abbrev-ref HEAD)
 HASH=$(shell git rev-parse HEAD)
 
-.PHONY: test swagger pygmentize
+.PHONY: test swagger pygmentize docker
 
 build: swagger pygmentize fmt
 	mkdir -p _build
@@ -21,7 +21,7 @@ gow:
 	which gow || go install github.com/mitranim/gow@latest
 	gow -e "go,mod,html,css,json,yaml,js" run -tags "timetzdata sqlite_fts5 sqlite_foreign_keys" blackforestbytes.com/simplecloudnotifier/cmd/scnserver
 
-docker: build
+docker:
 	[ ! -f "DOCKER_GIT_INFO" ] || rm DOCKER_GIT_INFO
 	git rev-parse --abbrev-ref HEAD    >> DOCKER_GIT_INFO
 	git rev-parse              HEAD    >> DOCKER_GIT_INFO