Add multi-platform build script and prod compose for registry deployment

- build-push.sh: buildx pipeline to docker.citysensor.de
- docker-compose.prod.yml: pull-only compose for nuccy (no build context)
- docker-compose.yml: image tag added for local tagging

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

build-push.sh

@@ -0,0 +1,24 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+REGISTRY="docker.citysensor.de"
+IMAGE="${REGISTRY}/bodenfeuchte"
+PLATFORMS="linux/amd64"
+TAG="${1:-latest}"
+
+# Ensure a buildx builder with multi-platform support exists
+if ! docker buildx inspect bodenfeuchte-builder &>/dev/null; then
+  docker buildx create --name bodenfeuchte-builder --use
+else
+  docker buildx use bodenfeuchte-builder
+fi
+
+echo "Building and pushing ${IMAGE}:${TAG} for ${PLATFORMS} ..."
+
+docker buildx build \
+  --platform "${PLATFORMS}" \
+  --tag "${IMAGE}:${TAG}" \
+  --push \
+  .
+
+echo "Done: ${IMAGE}:${TAG}"

docker-compose.prod.yml

@@ -0,0 +1,23 @@
+services:
+  bodenfeuchte:
+    image: docker.citysensor.de/bodenfeuchte:latest
+    expose:
+      - "3000"
+    volumes:
+      - bodenfeuchte-data:/app/data
+    env_file:
+      - .env
+    restart: unless-stopped
+
+  nginx:
+    image: nginx:alpine
+    ports:
+      - "80:80"
+    volumes:
+      - ./nginx/default.conf:/etc/nginx/conf.d/default.conf:ro
+    depends_on:
+      - bodenfeuchte
+    restart: unless-stopped
+
+volumes:
+  bodenfeuchte-data:

docker-compose.yml

@@ -1,6 +1,7 @@
 services:
   bodenfeuchte:
     build: .
+    image: docker.citysensor.de/bodenfeuchte:latest
     expose:
       - "3000"
     volumes: