ALPINE.txt: bump to 3.18

Updates #cleanup

Signed-off-by: Maisem Ali <maisem@tailscale.com>

ALPINE.txt

@@ -1 +1 @@
-3.16
+3.18

Dockerfile

@@ -66,7 +66,7 @@ RUN GOARCH=$TARGETARCH go install -ldflags="\
       -X tailscale.com/version.gitCommitStamp=$VERSION_GIT_HASH" \
       -v ./cmd/tailscale ./cmd/tailscaled ./cmd/containerboot
 
-FROM alpine:3.16
+FROM alpine:3.18
 RUN apk add --no-cache ca-certificates iptables iproute2 ip6tables
 
 COPY --from=build-env /go/bin/* /usr/local/bin/

Dockerfile.base

@@ -1,5 +1,5 @@
 # Copyright (c) Tailscale Inc & AUTHORS
 # SPDX-License-Identifier: BSD-3-Clause
 
-FROM alpine:3.16
+FROM alpine:3.18
 RUN apk add --no-cache ca-certificates iptables iproute2 ip6tables iputils

build_docker.sh

@@ -26,7 +26,7 @@ eval $(./build_dist.sh shellvars)
 
 DEFAULT_TARGET="client"
 DEFAULT_TAGS="v${VERSION_SHORT},v${VERSION_MINOR}"
-DEFAULT_BASE="tailscale/alpine-base:3.16"
+DEFAULT_BASE="tailscale/alpine-base:3.18"
 
 PUSH="${PUSH:-false}"
 TARGET="${TARGET:-${DEFAULT_TARGET}}"
@@ -71,4 +71,4 @@ case "$TARGET" in
     echo "unknown target: $TARGET"
     exit 1
     ;;
-esac
+esac