Dockerfile

# Build: docker build -t webterm .
# Run:   docker run -v /var/run/docker.sock:/var/run/docker.sock -p 8080:8080 webterm --docker-watch

FROM golang:1.26-alpine AS builder

WORKDIR /src
COPY go.mod go.sum ./
RUN go mod download
COPY cmd ./cmd
COPY internal ./internal
COPY webterm ./webterm
COPY VERSION ./VERSION
RUN VERSION=$(cat /src/VERSION) && CGO_ENABLED=0 go build -trimpath -ldflags="-s -w -X github.com/rcarmo/webterm/webterm.Version=$VERSION" -o /out/webterm ./cmd/webterm

FROM alpine:3.21 AS runtime

# Keep docker-cli for user-provided webterm-command values like `docker logs` / `docker exec`.
RUN apk add --no-cache ca-certificates docker-cli

WORKDIR /app
COPY --from=builder /out/webterm /usr/local/bin/webterm

EXPOSE 8080

ENTRYPOINT ["webterm"]
CMD ["--host", "0.0.0.0", "--port", "8080", "--docker-watch"]