add dockerfile for releases

Dockerfile.release

@@ -0,0 +1,13 @@
+# This Dockerfile is used to build container image for production workloads.
+# It relies on the binaries produced by `ignite_release` and `ignite_release_extract_binaries` make targets.
+FROM alpine:3.19
+ARG TARGETARCH
+
+# Use `1025` G/UID so users can switch between this and `heighliner` image without a need to chown the files.
+RUN addgroup --gid 1025 -S pocket && adduser --uid 1025 -S pocket -G pocket
+
+COPY --chown=pocket:pocket release_binaries/poktroll_linux_$TARGETARCH /bin/poktrolld
+
+USER pocket
+
+ENTRYPOINT ["poktrolld"]