feat: Woodpecker-Plugin deploy für oumta-deploy

Schreibt dev- und beta-Images mit Digest nach tanztee/oumta-deploy über
dessen ci/deploy-image.sh. Gebaut per .woodpecker/plugins.yaml, Release
über Tag deploy-vX.Y.Z.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

woodpecker/deploy/Dockerfile

@@ -0,0 +1,5 @@
+# Woodpecker plugin: writes dev and beta image tags with digest to oumta-deploy
+FROM alpine:3.20
+RUN apk add --no-cache bash git ca-certificates crane
+COPY deploy.sh /usr/local/bin/deploy.sh
+ENTRYPOINT ["/usr/local/bin/deploy.sh"]

woodpecker/deploy/deploy.sh

@@ -0,0 +1,35 @@
+#!/usr/bin/env bash
+# Woodpecker plugin "deploy": writes the pushed image with its digest to
+# oumta-deploy. ci/deploy-image.sh there decides the environment from the tag
+# (-dev. -> dev, -beta. -> beta, anything else -> nothing).
+set -euo pipefail
+
+die() { echo "deploy: $*" >&2; exit 1; }
+
+VAR=${PLUGIN_VAR:?settings.var is missing}
+REGISTRY=${PLUGIN_REGISTRY:-git.uesome.de}
+IMAGE=${PLUGIN_IMAGE:-$REGISTRY/${CI_REPO:?CI_REPO is missing}}
+TAG=${PLUGIN_TAG:-${CI_COMMIT_TAG:-}}
+DEPLOY_USER=${PLUGIN_DEPLOY_USER:-oumta-ci}
+DEPLOY_REPO=${PLUGIN_DEPLOY_REPO:-https://git.uesome.de/tanztee/oumta-deploy.git}
+[[ -n $TAG ]] || die "no tag (settings.tag or tag event)"
+[[ -n ${PLUGIN_DEPLOY_TOKEN:-} ]] || die "settings.deploy_token is missing"
+
+major=${TAG#v}; major=${major%%.*}
+VAR=${VAR//\{major\}/$major}
+
+if [[ -n ${PLUGIN_REGISTRY_USERNAME:-} ]]; then
+  crane auth login "$REGISTRY" -u "$PLUGIN_REGISTRY_USERNAME" --password-stdin \
+    <<<"${PLUGIN_REGISTRY_PASSWORD:?settings.registry_password is missing}" >/dev/null
+fi
+
+# Token only via credential helper, never in a URL or config, so no log shows it
+helper='!f() { echo "username=$DEPLOY_USER"; echo "password=$PLUGIN_DEPLOY_TOKEN"; }; f'
+export DEPLOY_USER PLUGIN_DEPLOY_TOKEN
+work=$(mktemp -d)
+git -c credential.helper="$helper" clone --quiet "$DEPLOY_REPO" "$work/oumta-deploy"
+git -C "$work/oumta-deploy" config credential.helper "$helper"
+
+export DEPLOY_ENVS=${PLUGIN_ENVS:-}
+export SOURCE_REPO=${CI_REPO:-} SOURCE_COMMIT=${CI_COMMIT_SHA:-}
+"$work/oumta-deploy/ci/deploy-image.sh" "$VAR" "${IMAGE,,}:$TAG"