use goreleaser in cross-build image to emulate CI more closely

docker/images/cross-build/Dockerfile

@@ -1,5 +1,8 @@
-# Stage 1: Install Node.js with nvm
-FROM debian:bullseye-slim
+FROM goreleaser/goreleaser AS goreleaser
+
+FROM golang:1.21 AS golang
+
+FROM debian:bookworm-slim
 #
 # this file mirrors the build params used in the GitHub Actions and enables
 # reproducible builds for downstream forks for Ziti contributors 
@@ -7,38 +10,38 @@ FROM debian:bullseye-slim
 
 ARG TARGETARCH
 ARG golang_version=1.21.3
-ARG go_distribution_file=go${golang_version}.linux-${TARGETARCH}.tar.gz
 ARG go_path=/usr/share/go
 ARG go_root=/usr/local/go
-ARG go_cache=/usr/share/go_cache
-ARG uid=1000
-ARG gid=1000
+ARG go_cache=/usr/share/go
+
 RUN apt-get -y update \
     && apt-get -y install \
-        gcc-arm-linux-gnueabihf g++-arm-linux-gnueabihf gcc-aarch64-linux-gnu \
-        wget build-essential
+        gcc-arm-linux-gnueabi \
+        gcc-aarch64-linux-gnu \
+        wget \
+        git \
+        build-essential
 
-RUN wget -q https://go.dev/dl/${go_distribution_file}
-RUN tar -xzf ${go_distribution_file} -C /usr/local/
 
 RUN wget -qO- https://deb.nodesource.com/setup_18.x | bash \
     && apt-get -y update \
     && apt-get -y install \
         nodejs
 
-RUN mkdir ${go_path} ${go_cache}
-RUN chown -R ${uid}:${gid} ${go_path} ${go_cache}
 
-COPY ./linux-build.sh /usr/local/bin/
+COPY --from=golang /usr/local/go /usr/local/go
+# RUN chmod -R go+rX ${go_path} ${go_cache}
+
+COPY --from=goreleaser /usr/bin/goreleaser /usr/local/bin/goreleaser
+
+COPY ./linux-build.sh /usr/local/bin/linux-build.sh
 
-USER ${uid}:${gid}
 ENV TARGETARCH=${TARGETARCH}
 ENV GOPATH=${go_path}
 ENV GOROOT=${go_root}
 ENV GOCACHE=${go_cache}
 ENV PATH=${go_path}/bin:${go_root}/bin:$PATH
 
-RUN go install github.com/mitchellh/gox@latest
 WORKDIR /mnt
 ENTRYPOINT ["linux-build.sh"]
 

docker/images/cross-build/linux-build.sh

@@ -11,6 +11,19 @@ set -o nounset
 set -o pipefail
 set -o xtrace
 
+resolveArch() {
+    case ${1} in
+        amd64) echo amd64
+        ;;
+        arm|armv7*|arm/v7*|armhf*) echo armhf
+        ;;
+        arm64|armv8*|arm/v8*) echo arm64
+        ;;
+        *) echo ${1}
+        ;;
+    esac
+}
+
 # if no architectures supplied then default list of three
 if (( ${#} )); then
     typeset -a JOBS=(${@})
@@ -18,22 +31,6 @@ else
     typeset -a JOBS=(amd64 arm arm64)
 fi
 
-# specify the Go template used by Gox to save the artifacts
-GOX_OUTPUT="dist/{{.Arch}}/{{.OS}}/{{.Dir}}"
-# count the number of available CPUs for time-efficient parallelism
-PROC_COUNT=$(nproc --all)
-# compute the number of processors available for each job, rounded down to integer
-PROCS_PER_JOB=$((PROC_COUNT / ${#JOBS[@]}))
-# if multiple jobs and at least one processor for each job then background, else foreground with all available CPUs-1 (gox default)
-if (( ${#JOBS[@]} > 1 && ${PROCS_PER_JOB} )); then 
-    BACKGROUND="&"
-    # initialize an associative array in which to map background PIDs to the ARCH being built
-    typeset -A BUILDS
-else
-    BACKGROUND=""   # run normally in foreground
-    PROCS_PER_JOB=0 # invokes gox default to use all CPUs-1
-fi
-
 (
     HOME=/tmp/builder
     # Navigate to the "ui" directory and run npm commands
@@ -44,42 +41,11 @@ fi
     npm run build
 )
 
-for ARCH in ${JOBS[@]}; do
-    GOX_CMD="
-        gox \
-            -cgo \
-            -os=linux \
-            -arch=${ARCH} \
-            -output=${GOX_OUTPUT} \
-            -parallel=${PROCS_PER_JOB} \
-            ./cmd/zrok
-    "
-case ${ARCH} in
-        amd64)  eval ${GOX_CMD} ${BACKGROUND}
-                (( ${PROCS_PER_JOB} )) && BUILDS[${!}]=${ARCH}  # if greater than zero procs per job then map background pid->arch
-        ;;
-        arm)    eval CC=arm-linux-gnueabihf-gcc ${GOX_CMD} ${BACKGROUND}
-                (( ${PROCS_PER_JOB} )) && BUILDS[${!}]=${ARCH}
-        ;;
-        arm64)  eval CC=aarch64-linux-gnu-gcc ${GOX_CMD} ${BACKGROUND}
-                (( ${PROCS_PER_JOB} )) && BUILDS[${!}]=${ARCH}
-        ;;
-        *)      echo "ERROR: invalid architecture '${ARCH}', must be one of amd64, arm, arm64" >&2
-                exit 1
-        ;;
-    esac
+for ARCH in "${JOBS[@]}"; do
+    goreleaser build \
+    --clean \
+    --snapshot \
+    --output ./dist/ \
+    --config "./.goreleaser-linux-$(resolveArch "${ARCH}").yml"
 done
 
-# if not background in parallel then exit now with well earned success
-[[ -z "${BACKGROUND:-}" ]] && exit 0
-
-# Wait for builds in the background and exit with an error if any fail
-EXIT=0
-while true; do
-    # "wait -p" requires BASH >=5.1 which is present in Ubuntu 20.10 and Debian Bullseye
-    wait -n -p JOB_PID; JOB_RESULT=$?
-    echo "Building for ${BUILDS[$JOB_PID]} finished with result ${JOB_RESULT}"
-    (( ${JOB_RESULT} )) && EXIT=1
-done
-
-exit ${EXIT}