first commit

Dockerfile

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+FROM alpine:3.20
+
+# --- Metadaten / OCI Labels ---
+LABEL org.opencontainers.image.title="Drone Publish Tool" \
+      org.opencontainers.image.description="Automatisiertes Drone CI Tool zum Signieren (Cosign) und Erstellen von Gitea-Releases" \
+      org.opencontainers.image.authors="Patrick Buchhorst <patrick@buchhorster.de>" \
+      org.opencontainers.image.vendor="Buchhorster IT" \
+      org.opencontainers.image.source="https://gitea.buchhorster.de/patrick/drone-publish-tool" \
+      org.opencontainers.image.licenses="MIT"
+
+# Optionaler Build-ARG für Versionstag (falls über Drone gesetzt)
+ARG VERSION=1.0.0
+LABEL org.opencontainers.image.version=$VERSION
+
+# --- Systemabhängigkeiten ---
+RUN apk add --no-cache \
+      bash \
+      curl \
+      git \
+      jq \
+      tini \
+      wget \
+      ca-certificates \
+      docker-cli && \
+    update-ca-certificates
+
+# --- Cosign installieren ---
+RUN wget -qO /usr/local/bin/cosign \
+      https://github.com/sigstore/cosign/releases/download/v2.4.0/cosign-linux-amd64 && \
+    chmod +x /usr/local/bin/cosign
+
+# --- Entrypoint-Skript ---
+COPY entrypoint.sh /usr/local/bin/entrypoint.sh
+RUN chmod +x /usr/local/bin/entrypoint.sh
+
+# --- Saubere Startumgebung ---
+ENTRYPOINT ["/sbin/tini", "--", "/usr/local/bin/entrypoint.sh"]