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adduser took the first free uid, 1000, and the entrypoint gives a bind-mounted /var/lib/pixa to pixad, so on the host a person's login account ended up owning pixa's database and cache. The image now creates the pixad group with gid 65532 and the pixad user with uid 65532, which host login and system accounts do not use. The first-run step of "Running under upaas" in README.md names the uid and gid. Model: opus-5-5
95 lines
2.8 KiB
Docker
95 lines
2.8 KiB
Docker
# Lint stage
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# Same image as Dockerfile.lint: change both pins together.
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# golangci/golangci-lint:v2.12.2-alpine, 2026-08-07
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FROM golangci/golangci-lint:v2.12.2-alpine@sha256:91b27804074a0bacea298707f016911e60cf0cdbc6c7bf5ccacb5f0606d18d60 AS lint
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RUN apk add --no-cache make build-base vips-dev libheif-dev pkgconfig
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WORKDIR /src
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# Copy go mod files first for better layer caching
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COPY go.mod go.sum ./
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RUN go mod download
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# Copy source code
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COPY . .
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# Tells script/lint it is inside a container, so it runs the linter.
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ENV container=docker
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# Run formatting check and linter
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RUN make fmt-check
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RUN make lint
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# Build stage
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# golang:1.25.4-alpine, 2026-02-25
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FROM golang:1.25.4-alpine@sha256:d3f0cf7723f3429e3f9ed846243970b20a2de7bae6a5b66fc5914e228d831bbb AS builder
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# Depend on lint stage passing
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COPY --from=lint /src/go.sum /dev/null
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ARG VERSION=dev
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# Install build dependencies for CGO image libraries
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RUN apk add --no-cache \
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build-base \
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vips-dev \
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libheif-dev \
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pkgconfig
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WORKDIR /src
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# Copy go mod files first for better layer caching
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COPY go.mod go.sum ./
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RUN GOTOOLCHAIN=auto go mod download
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# Copy source code
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COPY . .
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# Run tests
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RUN make test
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# Build with CGO enabled
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RUN CGO_ENABLED=1 GOTOOLCHAIN=auto go build -ldflags "-X main.Version=${VERSION}" -o /pixad ./cmd/pixad
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# Runtime stage
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# alpine:3.21, 2026-02-25
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FROM alpine:3.21@sha256:c3f8e73fdb79deaebaa2037150150191b9dcbfba68b4a46d70103204c53f4709
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# Install runtime dependencies only
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RUN apk add --no-cache \
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vips \
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libheif \
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ca-certificates \
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tzdata \
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su-exec
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# Copy binary from builder
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COPY --from=builder /pixad /usr/local/bin/pixad
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COPY deploy/docker-entrypoint.sh /usr/local/bin/docker-entrypoint.sh
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# Create non-root user, config directory, and data directory. pixad
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# gets uid and gid 65532, which host login and system accounts do not
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# use: a bind-mounted /var/lib/pixa is given to pixad, and on the host
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# it must not belong to a person's account.
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RUN addgroup -g 65532 pixad && \
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adduser -D -H -s /sbin/nologin -u 65532 -G pixad pixad && \
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mkdir -p /var/lib/pixa /etc/pixa && \
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chown pixad:pixad /var/lib/pixa
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# No USER: the entrypoint must start as root to give a bind-mounted
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# /var/lib/pixa to pixad; it then runs the server as pixad.
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WORKDIR /var/lib/pixa
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EXPOSE 8080
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# Shell form so the probe follows PORT; a port set only in a mounted
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# config file is not seen here.
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HEALTHCHECK --interval=30s --timeout=5s --start-period=10s --retries=3 \
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CMD wget --spider -q "http://localhost:${PORT:-8080}/.well-known/healthcheck.json" || exit 1
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# Settings come from PORT and the PIXA_ environment variables; only
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# PIXA_SIGNING_KEY is required. A config file mounted at
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# /etc/pixa/config.yml is optional and is read when present.
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ENTRYPOINT ["/usr/local/bin/docker-entrypoint.sh"]
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