refactor: more detailed docker multi-stage builds

Dockerfile

@@ -1,55 +1,70 @@
-FROM golang:1.18.1-alpine3.15 AS asset
-COPY . /build/ClearDNS
-ENV UPX_VERSION="3.96"
+FROM golang:1.18-alpine3.16 AS adguardhome
+ENV ADGUARD_VERSION="v0.107.8"
+RUN \
+  apk add git make npm yarn && \
+  git clone https://github.com/AdguardTeam/AdGuardHome.git && \
+  cd ./AdGuardHome/ && git checkout ${ADGUARD_VERSION} && \
+  make CHANNEL="release" VERSION=${ADGUARD_VERSION} && \
+  mv ./AdGuardHome /tmp/
+
+FROM golang:1.18-alpine3.16 AS dnsproxy
+ENV DNSPROXY_VERSION="v0.43.1"
+RUN \
+  apk add git && \
+  git clone https://github.com/AdguardTeam/dnsproxy.git && \
+  cd ./dnsproxy/ && git checkout ${DNSPROXY_VERSION} && \
+  env CGO_ENABLED=0 go build -trimpath \
+    -ldflags "-X main.VersionString=${DNSPROXY_VERSION} -s -w" && \
+  mv ./dnsproxy /tmp/
+
+FROM golang:1.18-alpine3.16 AS overture
 ENV OVERTURE_VERSION="v1.8"
-ENV DNSPROXY_VERSION="v0.42.2"
-ENV ADGUARD_VERSION="v0.107.6"
 RUN \
-apk add git build-base bash make cmake glib-dev npm nodejs yarn perl ucl-dev zlib-dev && \
-\
-mkdir /build/release/ && cd /build/ && \
+  apk add git && \
   git clone https://github.com/shawn1m/overture.git && \
-git clone https://github.com/AdguardTeam/dnsproxy.git && \
-git clone https://github.com/AdguardTeam/AdGuardHome.git && \
+  cd ./overture/ && git checkout ${OVERTURE_VERSION} && \
+  env CGO_ENABLED=0 go build -o overture -trimpath \
+    -ldflags "-X main.version=${OVERTURE_VERSION} -s -w" ./main/main.go && \
+  mv ./overture /tmp/
+
+# upx can't be compiled under gcc11, so we should use alpine:3.15
+FROM alpine:3.15 AS upx
+ENV UPX_VERSION="3.96"
+RUN \
+  apk add bash build-base perl ucl-dev zlib-dev && \
   wget https://github.com/upx/upx/releases/download/v${UPX_VERSION}/upx-${UPX_VERSION}-src.tar.xz && \
-\
-cd /build/ && tar xf upx-${UPX_VERSION}-src.tar.xz && \
-cd upx-${UPX_VERSION}-src && make all && \
-mv ./src/upx.out /usr/bin/upx && \
-\
-cd /build/ClearDNS/ && mkdir ./build/ && \
+  tar xf upx-${UPX_VERSION}-src.tar.xz && \
+  cd upx-${UPX_VERSION}-src/ && make all && \
+  mv ./src/upx.out /tmp/upx
+
+FROM alpine:3.16 AS cleardns
+COPY . /ClearDNS
+RUN \
+  apk add build-base cmake glib-dev && \
+  cd ./ClearDNS/ && mkdir ./build/ && \
   cd ./build/ && cmake -DCMAKE_BUILD_TYPE=Release .. && make && \
-mv ../bin/cleardns /build/release/ && \
-\
-cd /build/overture/ && git checkout ${OVERTURE_VERSION} && \
-env CGO_ENABLED=0 go build -o overture -trimpath -ldflags "-X main.version=${OVERTURE_VERSION} -s -w" ./main/main.go && \
-mv ./overture /build/release/ && \
-\
-cd /build/dnsproxy/ && git checkout ${DNSPROXY_VERSION} && \
-env CGO_ENABLED=0 go build -trimpath -ldflags "-X main.VersionString=${DNSPROXY_VERSION} -s -w" && \
-mv ./dnsproxy /build/release/ && \
-\
-cd /build/AdGuardHome/ && git checkout ${ADGUARD_VERSION} && \
-make CHANNEL="release" VERSION=${ADGUARD_VERSION} && \
-mv ./AdGuardHome /build/release/ && \
-\
-cd /build/release/ && \
-strip cleardns && \
+  mv ../bin/cleardns /tmp/
+
+FROM alpine:3.16 AS asset
+COPY --from=adguardhome /tmp/AdGuardHome /release/
+COPY --from=dnsproxy /tmp/dnsproxy /release/
+COPY --from=overture /tmp/overture /release/
+COPY --from=cleardns /tmp/cleardns /release/
+COPY --from=upx /tmp/upx /usr/bin/
+COPY . /ClearDNS
+RUN \
+  apk add gcc ucl && \
+  cd /release/ && strip cleardns && \
   upx -9 AdGuardHome dnsproxy overture && \
-\
-cd /build/ && \
   wget https://res.dnomd343.top/Share/gfwlist/gfwlist.txt && \
   wget https://res.dnomd343.top/Share/chinalist/chinalist.txt && \
   wget https://res.dnomd343.top/Share/chinalist/china-ip.txt && \
-tar czf asset.tar.gz gfwlist.txt chinalist.txt china-ip.txt && \
-\
+  tar czf asset.tar.gz gfwlist.txt chinalist.txt china-ip.txt && rm -f *.txt && \
   mkdir -p /asset/etc/ && mkdir -p /asset/usr/ && \
-cp -r /build/ClearDNS/overture/ /asset/etc/ && \
-mv asset.tar.gz /asset/etc/overture/ && \
-mv /build/release/ /asset/usr/bin/ && \
-mv /build/ClearDNS/load.sh /asset/usr/bin/load
+  cp -r /ClearDNS/overture/ /asset/etc/ && mv asset.tar.gz /asset/etc/overture/ && \
+  mv /release/ /asset/usr/bin/ && mv /ClearDNS/load.sh /asset/usr/bin/load
 
-FROM alpine:3.15.4
+FROM alpine:3.16
 COPY --from=asset /asset /
 RUN apk add --no-cache ca-certificates glib iptables ip6tables && \
 echo -e "0\t4\t*\t*\t*\t/etc/overture/update.sh" > /var/spool/cron/crontabs/root