fix!: Docker: update Alpine to 3.21, drop x86 support

.github/workflows/ci.yml

@@ -77,7 +77,7 @@ jobs:
               with:
                   context: .
                   file: docker/Dockerfile
-                  platforms: linux/arm64/v8,linux/386,linux/amd64,linux/arm/v6,linux/arm/v7
+                  platforms: linux/arm64/v8,linux/amd64,linux/arm/v6,linux/arm/v7
                   tags: koenkk/zigbee2mqtt:latest-dev,ghcr.io/koenkk/zigbee2mqtt:latest-dev
                   push: true
                   build-args: |
@@ -92,7 +92,7 @@ jobs:
                   context: .
                   file: docker/Dockerfile
                   provenance: false
-                  platforms: linux/arm64/v8,linux/386,linux/amd64,linux/arm/v6,linux/arm/v7
+                  platforms: linux/arm64/v8,linux/amd64,linux/arm/v6,linux/arm/v7
                   tags: koenkk/zigbee2mqtt:latest,ghcr.io/koenkk/zigbee2mqtt:latest,koenkk/zigbee2mqtt:${{ github.ref_name }},ghcr.io/koenkk/zigbee2mqtt:${{ github.ref_name }}
                   push: true
                   build-args: |

docker/Dockerfile

@@ -1,4 +1,12 @@
-FROM alpine:3.18.4 AS base
+ARG TARGETPLATFORM
+
+# Need to use Alpine 3.18.4 which uses Node 18 for arm/v6 and arm/v7, otherwise the build hangs.
+# See https://github.com/nodejs/docker-node/issues/2077
+FROM alpine:3.18.4 AS arm-alpine
+FROM alpine:3.21 AS arm64-alpine
+FROM alpine:3.21 AS amd64-alpine
+
+FROM ${TARGETARCH}-alpine AS base
 
 ENV NODE_ENV=production
 WORKDIR /app
@@ -18,7 +26,7 @@ FROM base AS release
 ARG DATE
 ARG VERSION
 LABEL org.opencontainers.image.authors="Koen Kanters"
-LABEL org.opencontainers.image.title="zigbee2mqtt"
+LABEL org.opencontainers.image.title="Zigbee2MQTT"
 LABEL org.opencontainers.image.description="Zigbee to MQTT bridge using Zigbee-herdsman"
 LABEL org.opencontainers.image.url="https://github.com/Koenkk/zigbee2mqtt"
 LABEL org.opencontainers.image.documentation="https://www.zigbee2mqtt.io/"