adding btcd dockerfile.

docker/btcd/Dockerfile

@@ -0,0 +1,82 @@
+FROM golang:1.19.4 AS builder
+
+# User/Group definition
+ENV USER=btcd GROUP=btcd UID=8333 GID=8333
+
+## Create a user/group to be migrated to the target container
+RUN addgroup ${GROUP} --gid ${GID} \
+ && adduser \
+    --disabled-password \
+    --gecos "" \
+    --home "/var/btcd" \
+    --shell "/sbin/nologin" \
+    #--no-create-home \
+    --uid "${UID}" \
+    --gid "${GID}" \
+    "${USER}"
+
+# Create config/data directories
+RUN set -ex \
+  && mkdir -pv /var/btcd \
+  && mkdir -pv /var/run/btcd \
+  && mkdir -pv /etc/btcd \
+  && mkdir -pv /etc/btcd/keys
+
+# Pass a tag, branch or a commit using build-arg.  This allows a docker
+# image to be built from a specified Git state.  The default image
+# will use the Git tip of master by default.
+ARG git_repository="github.com/indra-labs/btcd"
+ARG git_tag="master"
+
+# Install dependencies and build the binaries.
+RUN git clone "https://"${git_repository} /go/src/${git_repository} \
+&&  cd /go/src/${git_repository} \
+&&  git checkout ${git_tag}
+
+# Source/Target release defaults
+ARG ARCH=amd64
+ARG GOARCH=amd64
+
+ENV GO111MODULE=on GOOS=linux
+
+WORKDIR $GOPATH/src/${git_repository}
+
+RUN set -ex \
+  && CGO_ENABLED=0 go build --ldflags '-w -s' -o /bin/btcd . \
+  && CGO_ENABLED=0 go build --ldflags '-w -s' -o /bin/ ./cmd/...
+
+# Copy the sample config file
+RUN cp /go/src/${git_repository}/sample-btcd.conf /etc/btcd/btcd.conf
+
+# ---
+# Configure and Build the target container
+# ---
+
+FROM scratch
+
+# Migrate User/Group to target
+COPY --from=builder /etc/passwd /etc/passwd
+COPY --from=builder /etc/group /etc/group
+COPY --from=builder /etc/btcd /etc/btcd
+
+# Migrate the binaries and storage folder
+COPY --from=builder /bin /bin
+COPY --from=builder --chown=btcd:btcd /var/btcd /var/btcd
+COPY --from=builder --chown=btcd:btcd /var/run/btcd /var/run/btcd
+
+# Enable the indra user
+USER btcd:btcd
+
+# ENV defaults
+# ENV IND_LOGFILEPATH=""
+
+# Set the data volumes
+#VOLUME ["/etc/btcd"]
+#VOLUME ["/var/btcd"]
+
+# :8333  btcd peer-to-peer port
+# :8334  btcd RPC port
+EXPOSE 8333 8334
+
+ENTRYPOINT ["/bin/btcd", "--configfile=/etc/btcd/btcd.conf", "--datadir=/var/btcd", "--rpckey=/etc/btcd/keys/rpc.key", "--rpccert=/etc/btcd/keys/rpc.cert"]
+CMD ["--listen=0.0.0.0:8333", "--rpclisten=0.0.0.0:8334"]