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Dockerfile
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FROM dpokidov/imagemagick:7.1.1-31-2-bookworm AS build
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:$PATH
ENV GOLANG_VERSION 1.21.9
RUN set -eux; \
arch="$(dpkg --print-architecture)"; arch="${arch##*-}"; \
url=; \
case "$arch" in \
'amd64') \
url='https://dl.google.com/go/go1.21.9.linux-amd64.tar.gz'; \
sha256='f76194c2dc607e0df4ed2e7b825b5847cb37e34fc70d780e2f6c7e805634a7ea'; \
;; \
'armhf') \
url='https://dl.google.com/go/go1.21.9.linux-armv6l.tar.gz'; \
sha256='3d53e0fc659a983bbca3ffa373fab26093d8b1d94198a503be19003a1d73ffb3'; \
;; \
'arm64') \
url='https://dl.google.com/go/go1.21.9.linux-arm64.tar.gz'; \
sha256='4d169d9cf3dde1692b81c0fd9484fa28d8bc98f672d06bf9db9c75ada73c5fbc'; \
;; \
'i386') \
url='https://dl.google.com/go/go1.21.9.linux-386.tar.gz'; \
sha256='a8ba72a03dd7e6e5b8827754153b0dc335361343535b733d666c458e30996b4a'; \
;; \
'mips64el') \
url='https://dl.google.com/go/go1.21.9.linux-mips64le.tar.gz'; \
sha256='10e99c0928698a01231df9a8c57b73376380f253005d95cffb932a47f2052bd9'; \
;; \
'ppc64el') \
url='https://dl.google.com/go/go1.21.9.linux-ppc64le.tar.gz'; \
sha256='6eadde4149c36dae7d9a9bd9385285db1d0e2988350822f4c72a5eb11ffbfffc'; \
;; \
'riscv64') \
url='https://dl.google.com/go/go1.21.9.linux-riscv64.tar.gz'; \
sha256='b92dcc990298d68652e28f3bec57824de99a328b8e584a31490b96fe4bd973c5'; \
;; \
's390x') \
url='https://dl.google.com/go/go1.21.9.linux-s390x.tar.gz'; \
sha256='05daee44fc4771b2a2471b678a812de2488f05110976faeb8bbbae740e01e7ae'; \
;; \
*) 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="$(stat -c '%Y' /usr/local/go)"; \
export SOURCE_DATE_EPOCH; \
# for logging validation/edification
date --date "@$SOURCE_DATE_EPOCH" --rfc-2822; \
\
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)"; [ "$after" = '7' ]; \
# (re-)clamp timestamp for reproducibility (allows "COPY --link" to be more clever/useful)
date="$(date -d "@$SOURCE_DATE_EPOCH" '+%Y%m%d%H%M.%S')"; \
touch -t "$date" /usr/local/go/go.env /usr/local/go; \
fi; \
\
# smoke test
go version; \
# make sure our reproducibile timestamp is probably still correct (best-effort inline reproducibility test)
epoch="$(stat -c '%Y' /usr/local/go)"; \
[ "$SOURCE_DATE_EPOCH" = "$epoch" ]
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 https://github.com/Pixboost/transformimgs.git
WORKDIR /go/src/github.com/Pixboost/transformimgs/cmd
RUN go build -o /transformimgs
FROM dpokidov/imagemagick:7.1.1-31-2-bookworm
ENV IM_HOME /usr/local/bin
USER 65534
COPY --from=build --chown=nobody:nogroup /transformimgs /transformimgs
ENTRYPOINT ["/transformimgs", "-imConvert=/usr/local/bin/convert", "-imIdentify=/usr/local/bin/identify"]