Build with Go 1.25

Signed-off-by: Stefan Prodan <stefan.prodan@gmail.com>

.github/workflows/build.yaml

@@ -23,14 +23,14 @@ jobs:
       - name: Setup Go
         uses: actions/setup-go@v5
         with:
-          go-version: 1.24.x
+          go-version: 1.25.x
           cache-dependency-path: |
             **/go.sum
             **/go.mod
       - name: Download modules
         run: |
           go mod download
-          go install golang.org/x/tools/cmd/goimports
+          go install golang.org/x/tools/cmd/goimports@latest
       - name: Run linters
         run: make fmt test-codegen
       - name: Verify CRDs

.github/workflows/release.yml

@@ -31,7 +31,7 @@ jobs:
       - name: Setup Go
         uses: actions/setup-go@v5
         with:
-          go-version: 1.24.x
+          go-version: 1.25.x
       - uses: fluxcd/flux2/action@main
       - uses: sigstore/cosign-installer@v3.8.1
       - name: Prepare

.github/workflows/scan.yml

@@ -34,7 +34,7 @@ jobs:
       - name: Setup Go
         uses: actions/setup-go@v5
         with:
-          go-version: 1.24.x
+          go-version: 1.25.x
       - name: Initialize CodeQL
         uses: github/codeql-action/init@v3
         with:

Dockerfile

@@ -1,4 +1,4 @@
-ARG GO_VERSION=1.24
+ARG GO_VERSION=1.25
 ARG XX_VERSION=1.6.1
 
 FROM --platform=$BUILDPLATFORM tonistiigi/xx:${XX_VERSION} AS xx
@@ -29,7 +29,7 @@ RUN xx-go build \
     -ldflags "-s -w -X github.com/fluxcd/flagger/pkg/version.REVISION=${REVISON}" \
     -a -o flagger ./cmd/flagger
 
-FROM alpine:3.21
+FROM alpine:3.22
 
 RUN apk --no-cache add ca-certificates
 

Dockerfile.loadtester

@@ -1,4 +1,4 @@
-FROM golang:1.24-alpine AS builder
+FROM golang:1.25-alpine AS builder
 
 ARG TARGETPLATFORM
 ARG TARGETARCH

Makefile

@@ -6,7 +6,7 @@ build:
 	CGO_ENABLED=0 go build -a -o ./bin/flagger ./cmd/flagger
 
 tidy:
-	rm -f go.sum; go mod tidy -compat=1.24
+	rm -f go.sum; go mod tidy -compat=1.25
 
 vet:
 	go vet ./...