Add .dockerfile for docker builds

.dockerfile

@@ -0,0 +1,34 @@
+FROM --platform=${BUILDPLATFORM:-linux/amd64} golang:1.22 as builder
+
+ARG TARGETPLATFORM
+ARG BUILDPLATFORM
+ARG TARGETOS
+ARG TARGETARCH
+
+RUN mkdir /build
+WORKDIR /build/
+ADD . .
+RUN CGO_ENABLED=0 GOOS=${TARGETOS} GOARCH=${TARGETARCH} go build -ldflags="-w -s" -o ldlm-server ./cmd/server/
+RUN CGO_ENABLED=0 GOOS=${TARGETOS} GOARCH=${TARGETARCH} go build -ldflags="-w -s" -o ldlm-lock ./cmd/lock/
+
+FROM --platform=${TARGETPLATFORM:-linux/amd64} debian:bookworm-slim
+COPY --from=builder /build/ldlm-server /usr/bin/ldlm-server
+COPY --from=builder /build/ldlm-lock /usr/bin/ldlm-lock
+
+LABEL org.opencontainers.image.source=https://github.com/imoore76/go-ldlm
+LABEL org.opencontainers.image.description="LDLM server"
+LABEL org.opencontainers.image.licenses="Apache 2.0"
+
+ENV LDLM_LISTEN_ADDRESS="0.0.0.0:3144" LDLM_IPC_SOCKET_FILE="/tmp/ldlm-ipc.sock"
+EXPOSE "3144/tcp"
+
+RUN set -eux; \
+        groupadd -r ldlm --gid=999; \
+        useradd -r -g ldlm --uid=999 --home-dir=/home/ldlm --shell=/bin/bash ldlm; \
+        mkdir -p /home/ldlm
+
+WORKDIR /home/ldlm
+
+USER ldlm:ldlm
+
+CMD ["/usr/bin/ldlm-server"] 

.gitignore

@@ -2,6 +2,7 @@
 !/.gitignore
 !/.github
 !/.goreleaser.yaml
+!/.dockerfile
 /build
 /dist