release: Install curl

Install curl in the release make target so that CILIUM_VERSION gets set
properly.

Fixes: #2795
Fixes: #2802

Signed-off-by: Michi Mutsuzaki <michi@isovalent.com>

Dockerfile

@@ -5,7 +5,7 @@
 
 FROM docker.io/library/golang:1.23.1-alpine3.19@sha256:e0ea2a119ae0939a6d449ea18b2b1ba30b44986ec48dbb88f3a93371b4bf8750 AS builder
 WORKDIR /go/src/github.com/cilium/cilium-cli
-RUN apk add --no-cache git make ca-certificates
+RUN apk add --no-cache curl git make ca-certificates
 COPY . .
 RUN make
 

Makefile

@@ -41,7 +41,7 @@ release:
 		--rm \
 		--workdir /cilium \
 		--volume `pwd`:/cilium docker.io/library/golang:$(GO_IMAGE_VERSION)@$(GO_IMAGE_SHA) \
-		sh -c "apk add --no-cache setpriv make git zip && \
+		sh -c "apk add --no-cache curl setpriv make git zip && \
 			/usr/bin/setpriv --reuid=$(RELEASE_UID) --regid=$(RELEASE_GID) --clear-groups make GOCACHE=/tmp/gocache local-release"
 
 local-release: clean