feat: add build gnofaucet layer

Signed-off-by: gfanton <8671905+gfanton@users.noreply.github.com>

Dockerfile

@@ -1,19 +1,30 @@
-# build
-FROM        golang:1.22 AS build
+# build gno
+FROM        golang:1.22 AS build-gno
 RUN         mkdir -p /opt/gno/src /opt/build
 WORKDIR     /opt/build
-ADD         go.mod go.sum ./
+ADD         go.mod go.sum .
 RUN         go mod download
 ADD         . ./
 RUN         go build -o ./build/gnoland   ./gno.land/cmd/gnoland
 RUN         go build -o ./build/gnokey    ./gno.land/cmd/gnokey
-RUN         go build -o ./build/gnofaucet ./gno.land/cmd/gnofaucet
 RUN         go build -o ./build/gnoweb    ./gno.land/cmd/gnoweb
 RUN         go build -o ./build/gno       ./gnovm/cmd/gno
+# special case for gnofaucet
+RUN         go -modfile=contribs/gnofaucet/go.mod build -o ./build/gnofaucet ./contribs/gnofaucet/go.mod
 RUN         ls -la ./build
 ADD         . /opt/gno/src/
 RUN         rm -rf /opt/gno/src/.git
 
+# build faucet
+FROM        golang:1.22 AS build-faucet
+RUN         mkdir -p /opt/gno/src /opt/build
+WORKDIR     /opt/build
+ADD         contribs/gnofaucet/go.mod contribs/gnofaucet/go.sum .
+RUN         go mod download
+ADD         contribs/gnofaucet ./
+RUN         go build -o ./build/gnofaucet .
+
+
 # runtime-base + runtime-tls
 FROM        debian:stable-slim AS runtime-base
 ENV         PATH="${PATH}:/opt/gno/bin" \
@@ -25,32 +36,32 @@ RUN         apt-get update && apt-get install -y expect ca-certificates && updat
 # slim images
 FROM        runtime-base AS gnoland-slim
 WORKDIR     /opt/gno/src/gno.land/
-COPY        --from=build /opt/build/build/gnoland /opt/gno/bin/
+COPY        --from=build-gno /opt/build/build/gnoland /opt/gno/bin/
 ENTRYPOINT  ["gnoland"]
 EXPOSE      26657 36657
 
 FROM        runtime-base AS gnokey-slim
-COPY        --from=build /opt/build/build/gnokey /opt/gno/bin/
+COPY        --from=build-gno /opt/build/build/gnokey /opt/gno/bin/
 ENTRYPOINT  ["gnokey"]
 
 FROM        runtime-base AS gno-slim
-COPY        --from=build /opt/build/build/gno /opt/gno/bin/
+COPY        --from=build-gno /opt/build/build/gno /opt/gno/bin/
 ENTRYPOINT  ["gno"]
 
 FROM        runtime-tls AS gnofaucet-slim
-COPY        --from=build /opt/build/build/gnofaucet /opt/gno/bin/
+COPY        --from=build-faucet /opt/build/build/gnofaucet /opt/gno/bin/
 ENTRYPOINT  ["gnofaucet"]
 EXPOSE      5050
 
 FROM        runtime-tls AS gnoweb-slim
-COPY        --from=build /opt/build/build/gnoweb /opt/gno/bin/
-COPY        --from=build /opt/gno/src/gno.land/cmd/gnoweb /opt/gno/src/gnoweb
+COPY        --from=build-gno /opt/build/build/gnoweb /opt/gno/bin/
+COPY        --from=build-gno /opt/gno/src/gno.land/cmd/gnoweb /opt/gno/src/gnoweb
 ENTRYPOINT  ["gnoweb"]
 EXPOSE      8888
 
 # all, contains everything.
 FROM        runtime-tls AS all
-COPY        --from=build /opt/build/build/* /opt/gno/bin/
-COPY        --from=build /opt/gno/src /opt/gno/src
+COPY        --from=build-gno /opt/build/build/* /opt/gno/bin/
+COPY        --from=build-gno /opt/gno/src /opt/gno/src
 # gofmt is required by `gnokey maketx addpkg`
-COPY        --from=build /usr/local/go/bin/gofmt /usr/bin
+COPY        --from=build-gno /usr/local/go/bin/gofmt /usr/bin