mirror of
https://github.com/tarampampam/error-pages.git
synced 2024-08-30 18:22:40 +00:00
91 lines
2.6 KiB
Docker
91 lines
2.6 KiB
Docker
# syntax=docker/dockerfile:1
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# this stage is used to build the application
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FROM docker.io/library/golang:1.22-bookworm AS builder
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COPY ./go.* /src/
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WORKDIR /src
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# burn the modules cache
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RUN go mod download
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# this stage is used to compile the application
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FROM builder AS compiler
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# can be passed with any prefix (like `v1.2.3@GITHASH`), e.g.: `docker build --build-arg "APP_VERSION=v1.2.3@GITHASH" .`
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ARG APP_VERSION="undefined@docker"
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WORKDIR /src
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COPY . .
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# arguments to pass on each go tool link invocation
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ENV LDFLAGS="-s -w -X gh.tarampamp.am/error-pages/internal/version.version=$APP_VERSION"
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# build the application
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RUN set -x \
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&& CGO_ENABLED=0 go build -trimpath -ldflags "$LDFLAGS" -o ./error-pages ./cmd/error-pages/ \
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&& ./error-pages --version \
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&& ./error-pages -h
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WORKDIR /tmp/rootfs
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# prepare rootfs for runtime
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RUN set -x \
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&& mkdir -p \
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./etc \
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./bin \
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./opt/html \
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&& echo 'appuser:x:10001:10001::/nonexistent:/sbin/nologin' > ./etc/passwd \
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&& echo 'appuser:x:10001:' > ./etc/group \
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&& mv /src/error-pages ./bin/error-pages \
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&& mv /src/templates ./opt/templates \
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&& rm ./opt/templates/*.md \
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&& mv /src/error-pages.yml ./opt/error-pages.yml
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WORKDIR /tmp/rootfs/opt
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# generate static error pages (for usage inside another docker images, for example)
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RUN set -x \
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&& ./../bin/error-pages --verbose build --config-file ./error-pages.yml --index ./html \
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&& ls -l ./html
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# use empty filesystem
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FROM scratch AS runtime
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ARG APP_VERSION="undefined@docker"
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LABEL \
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# Docs: <https://github.com/opencontainers/image-spec/blob/master/annotations.md>
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org.opencontainers.image.title="error-pages" \
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org.opencontainers.image.description="Static server error pages in the docker image" \
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org.opencontainers.image.url="https://github.com/tarampampam/error-pages" \
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org.opencontainers.image.source="https://github.com/tarampampam/error-pages" \
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org.opencontainers.image.vendor="tarampampam" \
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org.opencontainers.version="$APP_VERSION" \
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org.opencontainers.image.licenses="MIT"
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# Import from builder
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COPY --from=compiler /tmp/rootfs /
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# Use an unprivileged user
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USER 10001:10001
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WORKDIR /opt
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ENV LISTEN_PORT="8080" \
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TEMPLATE_NAME="ghost" \
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DEFAULT_ERROR_PAGE="404" \
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DEFAULT_HTTP_CODE="404" \
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SHOW_DETAILS="false" \
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DISABLE_L10N="false" \
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READ_BUFFER_SIZE="2048"
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# Docs: <https://docs.docker.com/engine/reference/builder/#healthcheck>
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HEALTHCHECK --interval=7s --timeout=2s CMD ["/bin/error-pages", "--log-json", "healthcheck"]
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ENTRYPOINT ["/bin/error-pages"]
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CMD ["--log-json", "serve"]
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