Add Dockerfile

I added this so that I could run a nak bunker on my server alongside my other containers. Thought it might be useful for others.

.dockerignore

@@ -0,0 +1,36 @@
+# git files
+.git
+.gitignore
+
+# documentation
+README.md
+LICENSE
+
+# development files
+justfile
+*.md
+
+# test files
+*_test.go
+cli_test.go
+
+# build artifacts
+nak
+*.exe
+mnt
+
+# ide and editor files
+.vscode
+.idea
+*.swp
+*.swo
+*~
+
+# os generated files
+.DS_Store
+.DS_Store?
+._*
+.Spotlight-V100
+.Trashes
+ehthumbs.db
+Thumbs.db

Dockerfile

@@ -0,0 +1,49 @@
+# build stage
+FROM golang:1.24-alpine AS builder
+
+# install git and ca-certificates (needed for fetching dependencies)
+RUN apk add --no-cache git ca-certificates
+
+# set working directory
+WORKDIR /app
+
+# copy go mod files first for better caching
+COPY go.mod go.sum ./
+
+# download dependencies
+RUN go mod download
+
+# copy source code
+COPY . .
+
+# build the application
+# use cgo_enabled=0 to create a static binary
+# use -ldflags to strip debug info and reduce binary size
+RUN CGO_ENABLED=0 GOOS=linux go build -ldflags="-w -s" -o nak .
+
+# runtime stage
+FROM alpine:latest
+
+# install ca-certificates for https requests (needed for relay connections)
+RUN apk --no-cache add ca-certificates
+
+# create a non-root user
+RUN adduser -D -s /bin/sh nakuser
+
+# set working directory
+WORKDIR /home/nakuser
+
+# copy the binary from builder stage
+COPY --from=builder /app/nak /usr/local/bin/nak
+
+# make sure the binary is executable
+RUN chmod +x /usr/local/bin/nak
+
+# switch to non-root user
+USER nakuser
+
+# set the entrypoint
+ENTRYPOINT ["nak"]
+
+# default command (show help)
+CMD ["--help"]

README.md

@@ -304,6 +304,14 @@ ffmpeg -f alsa -i default -f webm -t 00:00:03 pipe:1 | nak blossom --server blos
 ```shell
 ~> cat all.jsonl | nak filter -k 1111 > filtered.jsonl
 ```
+### run nak in Docker
+
+If you want to run nak inside a container (i.e. to run nak as a server, or to avoid installing the Go toolchain) you can run it with Docker:
+
+```shell
+docker build -t nak .
+docker run nak event
+```
 
 ## contributing to this repository