Update Alpine image version to 3.14 (oauth2-proxy#1244)

* Update Alpine image version to 3.14.

* Update changelog.

CHANGELOG.md

@@ -14,6 +14,7 @@
 - [#1142](https://github.com/oauth2-proxy/oauth2-proxy/pull/1142) Add pagewriter to upstream proxy (@JoelSpeed)
 - [#1181](https://github.com/oauth2-proxy/oauth2-proxy/pull/1181) Fix incorrect `cfg` name in show-debug-on-error flag (@iTaybb)
 - [#1207](https://github.com/oauth2-proxy/oauth2-proxy/pull/1207) Fix URI fragment handling on sign-in page, regression introduced in 7.1.0 (@tarvip)
+- [#1244](https://github.com/oauth2-proxy/oauth2-proxy/pull/1244) Update Alpine image version to 3.14 (@ahovgaard)
 
 
 # V7.1.3

Dockerfile

@@ -21,7 +21,7 @@ ARG VERSION
 RUN VERSION=${VERSION} make build && touch jwt_signing_key.pem
 
 # Copy binary to alpine
-FROM alpine:3.13
+FROM alpine:3.14
 COPY nsswitch.conf /etc/nsswitch.conf
 COPY --from=builder /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/ca-certificates.crt
 COPY --from=builder /go/src/github.com/oauth2-proxy/oauth2-proxy/oauth2-proxy /bin/oauth2-proxy

Dockerfile.arm64

@@ -21,7 +21,7 @@ ARG VERSION
 RUN VERSION=${VERSION} GOARCH=arm64 make build && touch jwt_signing_key.pem
 
 # Copy binary to alpine
-FROM arm64v8/alpine:3.13
+FROM arm64v8/alpine:3.14
 COPY nsswitch.conf /etc/nsswitch.conf
 COPY --from=builder /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/ca-certificates.crt
 COPY --from=builder /go/src/github.com/oauth2-proxy/oauth2-proxy/oauth2-proxy /bin/oauth2-proxy

Dockerfile.armv6

@@ -21,7 +21,7 @@ ARG VERSION
 RUN VERSION=${VERSION} GOARCH=arm GOARM=6 make build && touch jwt_signing_key.pem
 
 # Copy binary to alpine
-FROM arm32v6/alpine:3.13
+FROM arm32v6/alpine:3.14
 COPY nsswitch.conf /etc/nsswitch.conf
 COPY --from=builder /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/ca-certificates.crt
 COPY --from=builder /go/src/github.com/oauth2-proxy/oauth2-proxy/oauth2-proxy /bin/oauth2-proxy