Dockerfile.dev

# syntax=docker/dockerfile:1.7
# Switchboard DEV image — Air hot-reload, source bind-mounted at runtime.
# Pins match go.mod (Go 1.26.6). Do not use for production (see Dockerfile).

ARG GO_VERSION=1.26.6
# air-verse/air is MIT. Pin >=1.62: older 1.61.x overwrote .air.toml with flag defaults.
ARG AIR_VERSION=v1.67.4

FROM golang:1.26.6-bookworm@sha256:116d58cbd88c1297624acc6e967a060012422bacf9930927e23fb719189c6f36

ARG AIR_VERSION
ENV CGO_ENABLED=0 \
    GO111MODULE=on \
    GOPATH=/go \
    GOCACHE=/go-cache \
    GOMODCACHE=/go/pkg/mod \
    HOME=/root \
    PATH=/go/bin:/usr/local/go/bin:$PATH

# curl is used by the compose healthcheck against /api/health.
RUN apt-get update \
 && apt-get install -y --no-install-recommends git ca-certificates curl \
 && rm -rf /var/lib/apt/lists/* \
 && go install github.com/air-verse/air@${AIR_VERSION} \
 && air -v \
 && mkdir -p /tmp/air /go-cache /root/.config/switchboard /src/tmp

WORKDIR /src

# Air as PID1 so SIGTERM reaches the watcher directly.
# Compose bind-mounts source over /src; binary/tmp live on a named volume.
CMD ["air", "-c", ".air.toml"]