chore: Add dockerfile

Signed-off-by: Olivier Vernin <[email protected]>

Dockerfile

@@ -0,0 +1,48 @@
+## Build final releasepost docker image
+#  We on purpose release artifacts created by goreleaser
+#  located in the dist directory
+
+## Goreleaser requires the "--platform" to handle multi-platform builds
+# hadolint ignore=DL3029
+FROM --platform=${BUILDPLATFORM} debian:stable-slim
+
+LABEL maintainer="Olivier Vernin <[email protected]>"
+
+# Dynamic labels are defined from the goreleaser configuration ".goreleaser.yaml"
+LABEL org.opencontainers.image.authors="Olivier Vernin<[email protected]>"
+LABEL org.opencontainers.image.url="https://github.com/updatecli/releasepost"
+LABEL org.opencontainers.image.documentation="https://github.com/updatecli/releasepost"
+LABEL org.opencontainers.image.licenses="APACHEV2"
+LABEL org.opencontainers.image.title="Releasepost"
+LABEL org.opencontainers.image.description="Re-post release notes"
+LABEL org.opencontainers.image.base.name="ghcr.io/updatecli/releasepost"
+LABEL org.opencontainers.image.source https://github.com/updatecli/releasepost
+
+# /tmp is used by updatecli to store git repository so it's better
+# to define a volume
+VOLUME /tmp
+
+## The latest version of these "generic" package is always required
+# hadolint ignore=DL3008
+RUN apt-get update && \
+    apt-get install --yes --no-install-recommends \
+        ca-certificates \
+        curl \
+        tar \
+        unzip \
+        wget &&\
+    apt-get clean && \
+    rm -rf /var/lib/apt/lists/*
+
+# Available files only matched against the binaries generated by the builds section
+# and packages generated by the nfpms section.
+COPY releasepost  /usr/local/bin/releasepost
+
+RUN useradd -d /home/releasepost -U -u 1000 -m releasepost
+
+USER releasepost
+
+WORKDIR /home/releasepost
+
+ENTRYPOINT [ "/usr/local/bin/releasepost" ]
+CMD ["help"]