chore: update Dockerfile

build-docker.sh

@@ -0,0 +1,18 @@
+#!/bin/bash
+
+set -e
+
+REGISTRY="harbor.cl1.parano.ch/library"
+IMAGE="myice"
+
+current_commit=$(git rev-parse HEAD)
+
+git_tag=$(git tag --points-at "$current_commit")
+
+if [[ -z $git_tag ]]; then
+    echo "Build only works on a git tag" >&2
+    exit 1
+fi
+
+docker build --platform linux/amd64 -t "$REGISTRY/$IMAGE:$git_tag" .
+docker push "$REGISTRY/$IMAGE:$git_tag"