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Dockerfile
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FROM dpokidov/imagemagick:7.1.1-36-2-bookworm AS build
ARG BRANCH=main
RUN apt-get update && apt-get upgrade -y && apt-get install -y --no-install-recommends \
g++ \
gcc \
libc6-dev \
make \
pkg-config \
dirmngr \
gpg \
gpg-agent \
wget \
git \
&& rm -rf /var/lib/apt/lists/*
#Installing golang
ENV PATH /usr/local/go/bin:$PATH
ENV GOLANG_VERSION 1.22.6
RUN set -eux; \
now="$(date '+%s')"; \
arch="$(dpkg --print-architecture)"; arch="${arch##*-}"; \
url=; \
case "$arch" in \
'amd64') \
url='https://dl.google.com/go/go1.22.6.linux-amd64.tar.gz'; \
sha256='999805bed7d9039ec3da1a53bfbcafc13e367da52aa823cb60b68ba22d44c616'; \
;; \
'armhf') \
url='https://dl.google.com/go/go1.22.6.linux-armv6l.tar.gz'; \
sha256='b566484fe89a54c525dd1a4cbfec903c1f6e8f0b7b3dbaf94c79bc9145391083'; \
;; \
'arm64') \
url='https://dl.google.com/go/go1.22.6.linux-arm64.tar.gz'; \
sha256='c15fa895341b8eaf7f219fada25c36a610eb042985dc1a912410c1c90098eaf2'; \
;; \
'i386') \
url='https://dl.google.com/go/go1.22.6.linux-386.tar.gz'; \
sha256='9e680027b058beab10ce5938607660964b6d2c564bf50bdb01aa090dc5beda98'; \
;; \
'mips64el') \
url='https://dl.google.com/go/go1.22.6.linux-mips64le.tar.gz'; \
sha256='01547606c5b5c1b0e5587b3afd65172860d2f4755e523785832905759ecce2d7'; \
;; \
'ppc64el') \
url='https://dl.google.com/go/go1.22.6.linux-ppc64le.tar.gz'; \
sha256='9d99fce3f6f72a76630fe91ec0884dfe3db828def4713368424900fa98bb2bd6'; \
;; \
'riscv64') \
url='https://dl.google.com/go/go1.22.6.linux-riscv64.tar.gz'; \
sha256='30be9c9b9cc4f044d4da9a33ee601ab7b3aff4246107d323a79e08888710754e'; \
;; \
's390x') \
url='https://dl.google.com/go/go1.22.6.linux-s390x.tar.gz'; \
sha256='82f3bae3ddb4ede45b848db48c5486fadb58551e74507bda45484257e7194a95'; \
;; \
*) echo >&2 "error: unsupported architecture '$arch' (likely packaging update needed)"; exit 1 ;; \
esac; \
\
wget -O go.tgz.asc "$url.asc"; \
wget -O go.tgz "$url" --progress=dot:giga; \
echo "$sha256 *go.tgz" | sha256sum -c -; \
\
# https://github.com/golang/go/issues/14739#issuecomment-324767697
GNUPGHOME="$(mktemp -d)"; export GNUPGHOME; \
# https://www.google.com/linuxrepositories/
gpg --batch --keyserver keyserver.ubuntu.com --recv-keys 'EB4C 1BFD 4F04 2F6D DDCC EC91 7721 F63B D38B 4796'; \
# let's also fetch the specific subkey of that key explicitly that we expect "go.tgz.asc" to be signed by, just to make sure we definitely have it
gpg --batch --keyserver keyserver.ubuntu.com --recv-keys '2F52 8D36 D67B 69ED F998 D857 78BD 6547 3CB3 BD13'; \
gpg --batch --verify go.tgz.asc go.tgz; \
gpgconf --kill all; \
rm -rf "$GNUPGHOME" go.tgz.asc; \
\
tar -C /usr/local -xzf go.tgz; \
rm go.tgz; \
\
# save the timestamp from the tarball so we can restore it for reproducibility, if necessary (see below)
SOURCE_DATE_EPOCH="$(stat -c '%Y' /usr/local/go)"; \
export SOURCE_DATE_EPOCH; \
touchy="$(date -d "@$SOURCE_DATE_EPOCH" '+%Y%m%d%H%M.%S')"; \
# for logging validation/edification
date --date "@$SOURCE_DATE_EPOCH" --rfc-2822; \
# sanity check (detected value should be older than our wall clock)
[ "$SOURCE_DATE_EPOCH" -lt "$now" ]; \
\
if [ "$arch" = 'armhf' ]; then \
[ -s /usr/local/go/go.env ]; \
before="$(go env GOARM)"; [ "$before" != '7' ]; \
{ \
echo; \
echo '# https://github.com/docker-library/golang/issues/494'; \
echo 'GOARM=7'; \
} >> /usr/local/go/go.env; \
after="$(go env GOARM)"; [ "$after" = '7' ]; \
# (re-)clamp timestamp for reproducibility (allows "COPY --link" to be more clever/useful)
touch -t "$touchy" /usr/local/go/go.env /usr/local/go; \
fi; \
\
# ideally at this point, we would just "COPY --link ... /usr/local/go/ /usr/local/go/" but BuildKit insists on creating the parent directories (perhaps related to https://github.com/opencontainers/image-spec/pull/970), and does so with unreproducible timestamps, so we instead create a whole new "directory tree" that we can "COPY --link" to accomplish what we want
mkdir /target /target/usr /target/usr/local; \
mv -vT /usr/local/go /target/usr/local/go; \
ln -svfT /target/usr/local/go /usr/local/go; \
touch -t "$touchy" /target/usr/local /target/usr /target; \
\
# smoke test
go version;
ENV GOPATH /go
ENV PATH $GOPATH/bin:$PATH
RUN mkdir -p "$GOPATH/src" "$GOPATH/bin" && chmod -R 1777 "$GOPATH"
WORKDIR $GOPATH
RUN mkdir -p /go/src/github.com/Pixboost/
WORKDIR /go/src/github.com/Pixboost/
RUN git clone --branch $BRANCH --single-branch https://github.com/Pixboost/transformimgs.git
WORKDIR /go/src/github.com/Pixboost/transformimgs/illustration
RUN go build -o /illustration
WORKDIR /go/src/github.com/Pixboost/transformimgs/cmd
RUN go build -o /transformimgs
FROM dpokidov/imagemagick:7.1.1-36-2-bookworm
ENV IM_HOME /usr/local/bin
USER 65534
COPY --from=build --chown=nobody:nogroup /illustration /usr/local/bin/illustration
COPY --from=build --chown=nobody:nogroup /transformimgs /transformimgs
ENTRYPOINT ["/transformimgs", "-imConvert=/usr/local/bin/convert", "-imIdentify=/usr/local/bin/identify"]