bootstrap: attemps fetching for 1 minute before giving up

Dockerfile

@@ -1,5 +1,5 @@
 from golang:1.23.2-alpine3.20 as build
-run apk add --no-cache gcc musl-dev linux-headers eudev-dev
+run apk add --no-cache gcc musl-dev linux-headers eudev-dev upx
 
 workdir /src
 
@@ -10,7 +10,9 @@ run \
   --mount=type=cache,id=gomod,target=/go/pkg/mod \
   --mount=type=cache,id=gobuild,target=/root/.cache/go-build \
    go test ./... \
-&& go build -o /go/bin/init -trimpath .
+&& go build -ldflags "-s -w" -o /go/bin/init -trimpath .
+
+run upx /go/bin/init
 
 # ------------------------------------------------------------------------
 from alpine:3.20.3 as initrd
@@ -21,7 +23,7 @@ workdir /layer
 run . /etc/os-release \
  && wget -O- https://dl-cdn.alpinelinux.org/alpine/v${VERSION_ID%.*}/releases/x86_64/alpine-minirootfs-${VERSION_ID}-x86_64.tar.gz |tar zxv
 
-run apk add --no-cache -p . musl lvm2 lvm2-extra lvm2-dmeventd udev cryptsetup e2fsprogs btrfs-progs lsblk
+run apk add --no-cache -p . musl lvm2 lvm2-extra lvm2-dmeventd udev cryptsetup e2fsprogs lsblk
 run rm -rf usr/share/apk var/cache/apk
 
 copy --from=build /go/bin/init .

bootstrap.go

@@ -8,6 +8,7 @@ import (
 	"os"
 	"path/filepath"
 	"strings"
+	"time"
 
 	"github.com/rs/zerolog/log"
 
@@ -45,9 +46,18 @@ func bootstrap(cfg *config.Config) {
 		bootstrapFile := filepath.Join(baseDir, "bootstrap.tar")
 
 		err = func() (err error) {
-			resp, err := http.Get(seed)
+			var resp *http.Response
+
+			start := time.Now()
+			for time.Since(start) <= time.Minute {
+				resp, err = http.Get(seed)
+				if err == nil {
+					break
+				}
+				time.Sleep(time.Second)
+			}
 			if err != nil {
-				return
+				return fmt.Errorf("failed to fetch bootstrap")
 			}
 
 			if resp.StatusCode != http.StatusOK {