init

Dockerfile

@@ -0,0 +1,43 @@
+# syntax=docker/dockerfile:1
+
+# ---- deps: module download, cached until go.mod/go.sum change ----------------
+FROM golang:1.25-alpine AS deps
+WORKDIR /src
+COPY go.mod go.sum ./
+RUN --mount=type=cache,target=/go/pkg/mod go mod download
+
+# ---- test: `docker build --target test .` runs the test suite ----------------
+FROM deps AS test
+COPY . .
+RUN --mount=type=cache,target=/go/pkg/mod --mount=type=cache,target=/root/.cache/go-build \
+    go vet ./... && go test ./...
+
+# ---- build: static binaries (SQLite and Postgres drivers are pure Go) --------
+FROM deps AS build
+COPY . .
+ENV CGO_ENABLED=0
+RUN --mount=type=cache,target=/go/pkg/mod --mount=type=cache,target=/root/.cache/go-build \
+    go build -trimpath -ldflags="-s -w" -o /out/ ./cmd/server ./cmd/daily ./cmd/asm
+
+# ---- final: small runtime image ----------------------------------------------
+FROM alpine:3.20
+RUN addgroup -S -g 10001 wh && adduser -S -u 10001 -G wh wh \
+    && mkdir /data && chown wh:wh /data
+COPY --from=build /out/server /out/daily /out/asm /usr/local/bin/
+
+USER wh
+WORKDIR /data
+
+# Where the world lives: "sqlite:<path>" or "postgres://user:pass@host/db".
+# The default is a SQLite file on the /data volume; override it at run time,
+# e.g. -e DATABASE_URL=postgres://... (the -db flag also overrides it).
+ENV DATABASE_URL=sqlite:/data/wh.db
+VOLUME /data
+EXPOSE 8080
+
+HEALTHCHECK --interval=30s --timeout=3s --start-period=5s \
+    CMD wget -q -O /dev/null http://127.0.0.1:8080/info || exit 1
+
+# Default: the API and website. Run one simulated day with:
+#   docker run --rm -e DATABASE_URL=... <image> daily
+CMD ["server"]