Build with Go 1.18

.github/workflows/build-and-test.yml

@@ -6,7 +6,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        go: [ '1.17', '1.16' ]
+        go: [ '1.18', '1.17' ]
     name: Go ${{ matrix.go }} build
     steps:
       - uses: actions/checkout@v2

.github/workflows/release.yml

@@ -14,7 +14,7 @@ jobs:
       - name: Setup Go
         uses: actions/setup-go@v2
         with:
-          go-version: 1.17
+          go-version: 1.18
       - name: Setup Node.js
         uses: actions/setup-node@v3
         with:

Dockerfile

@@ -11,7 +11,7 @@ RUN yarn install --frozen-lockfile --non-interactive
 RUN yarn run build
 
 ### Build backend
-FROM golang:1.17-alpine3.14 as backend
+FROM golang:1.18-alpine3.16 as backend
 RUN apk add --no-cache --virtual .build-deps g++ git make
 WORKDIR /build
 COPY . .
@@ -22,7 +22,7 @@ RUN go build -o inbucket \
   -v ./cmd/inbucket
 
 ### Run in minimal image
-FROM alpine:3.14
+FROM alpine:3.16
 RUN apk --no-cache add tzdata
 WORKDIR /opt/inbucket
 RUN mkdir bin defaults ui