chore: add docker

Dockerfile

@@ -0,0 +1,47 @@
+# stage 1 Build blobstream-ops binary
+FROM --platform=$BUILDPLATFORM docker.io/golang:1.21.6-alpine3.18 as builder
+
+ARG TARGETOS
+ARG TARGETARCH
+
+ENV CGO_ENABLED=0
+ENV GO111MODULE=on
+
+RUN apk update && apk --no-cache add make gcc musl-dev git bash
+
+COPY . /blobstream-ops
+WORKDIR /blobstream-ops
+RUN uname -a &&\
+    CGO_ENABLED=${CGO_ENABLED} GOOS=${TARGETOS} GOARCH=${TARGETARCH} \
+    make build
+
+# final image
+FROM docker.io/alpine:3.20.1
+
+ARG UID=10001
+ARG USER_NAME=celestia
+
+ENV CELESTIA_HOME=/home/${USER_NAME}
+
+# hadolint ignore=DL3018
+RUN apk update && apk add --no-cache \
+        bash \
+        curl \
+        jq \
+    # Creates a user with $UID and $GID=$UID
+    && adduser ${USER_NAME} \
+        -D \
+        -g ${USER_NAME} \
+        -h ${CELESTIA_HOME} \
+        -s /sbin/nologin \
+        -u ${UID}
+
+COPY --from=builder /blobstream-ops/build/blobstream-ops /bin/blobstream-ops
+COPY --chown=${USER_NAME}:${USER_NAME} docker/entrypoint.sh /opt/entrypoint.sh
+
+USER ${USER_NAME}
+
+# p2p port
+EXPOSE 30000
+
+ENTRYPOINT [ "/bin/bash", "/opt/entrypoint.sh" ]

docker/entrypoint.sh

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+#!/bin/bash
+
+set -e
+
+echo "Starting Celestia Blobstream-ops with command:"
+echo "$@"
+echo ""
+
+exec "$@"