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deblobbify, replacing the system folder with several other components
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| termux-docker-rootfs |
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| ############################################################################## | ||
| # Bootstrap Termux environment. | ||
| FROM scratch AS bootstrap | ||
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| ARG BOOTSTRAP_VERSION=2023.02.19-r1%2Bapt-android-7 | ||
| ARG BOOTSTRAP_ARCH=i686 | ||
| ARG SYSTEM_TYPE=x86 | ||
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| # Docker uses /bin/sh by default, but we don't have it currently. | ||
| SHELL ["/system/bin/sh", "-c"] | ||
| ENV PATH /system/bin | ||
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| # Copy libc, linker and few utilities. | ||
| COPY /system/$SYSTEM_TYPE /system | ||
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| # Copy entrypoint script. | ||
| COPY /entrypoint.sh /entrypoint.sh | ||
| COPY /entrypoint_root.sh /entrypoint_root.sh | ||
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| # Extract bootstrap archive and create symlinks. | ||
| ADD https://github.com/termux/termux-packages/releases/download/bootstrap-$BOOTSTRAP_VERSION/bootstrap-$BOOTSTRAP_ARCH.zip /bootstrap.zip | ||
| RUN busybox mkdir -p /data/data/com.termux/files && \ | ||
| cd /data/data/com.termux/files && \ | ||
| busybox mkdir ../cache ./usr ./home && \ | ||
| busybox unzip -d usr /bootstrap.zip && \ | ||
| busybox rm /bootstrap.zip && \ | ||
| cd ./usr && \ | ||
| busybox cat SYMLINKS.txt | while read -r line; do \ | ||
| dest=$(echo "$line" | busybox awk -F '←' '{ print $1 }'); \ | ||
| link=$(echo "$line" | busybox awk -F '←' '{ print $2 }'); \ | ||
| busybox ln -s "$dest" "$link"; \ | ||
| done && \ | ||
| busybox rm SYMLINKS.txt && \ | ||
| busybox ln -s /data/data/com.termux/files/usr /usr && \ | ||
| busybox ln -s /data/data/com.termux/files/usr/bin /bin && \ | ||
| busybox ln -s /data/data/com.termux/files/usr/tmp /tmp | ||
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| # Link some utilities to busybox. | ||
| # Some utilities in $PREFIX are actually a wrapper of the same binary | ||
| # from /system/bin. See termux-tools/build.sh#L29. | ||
| RUN for tool in df mount ping ping6 su top umount; do \ | ||
| busybox ln -s /system/bin/busybox /system/bin/$tool; \ | ||
| done | ||
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| # Set ownership and file access modes: | ||
| # * User content is owned by 1000:1000. | ||
| # * Termux file modes are set only for user. | ||
| # * Rest is owned by root and has 755/644 modes. | ||
| RUN busybox chown -Rh 0:0 /system && \ | ||
| busybox chown -Rh 1000:1000 /data/data/com.termux && \ | ||
| busybox ln -s /system/etc/passwd /etc/passwd && \ | ||
| busybox ln -s /system/etc/group /etc/group && \ | ||
| busybox find /system -type d -exec busybox chmod 755 "{}" \; && \ | ||
| busybox find /system -type f -executable -exec busybox chmod 755 "{}" \; && \ | ||
| busybox find /system -type f ! -executable -exec busybox chmod 644 "{}" \; && \ | ||
| busybox find /data -type d -exec busybox chmod 755 "{}" \; && \ | ||
| busybox find /data/data/com.termux/files -type f -o -type d -exec busybox chmod g-rwx,o-rwx "{}" \; && \ | ||
| cd /data/data/com.termux/files/usr && \ | ||
| busybox find ./bin ./lib/apt ./libexec -type f -exec busybox chmod 700 "{}" \; | ||
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| # Install updates and cleanup when not building for arm. | ||
| ENV PATH /data/data/com.termux/files/usr/bin | ||
| RUN if [ ${SYSTEM_TYPE} = 'arm' ]; then exit; else \ | ||
| /system/bin/mksh -T /dev/ptmx -c "/system/bin/dnsmasq -u root -g root --pid-file /dnsmasq.pid" && sleep 1 && \ | ||
| su - system -c "/data/data/com.termux/files/usr/bin/apt update" && \ | ||
| su - system -c "/data/data/com.termux/files/usr/bin/apt upgrade -o Dpkg::Options::=--force-confnew -yq" && \ | ||
| rm -rf /data/data/com.termux/files/usr/var/lib/apt/* && \ | ||
| rm -rf /data/data/com.termux/files/usr/var/log/apt/* && \ | ||
| rm -rf /data/data/com.termux/cache/apt/* ;\ | ||
| fi | ||
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| ############################################################################## | ||
| # Create final image. | ||
| FROM scratch | ||
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| ENV ANDROID_DATA /data | ||
| ENV ANDROID_ROOT /system | ||
| ENV HOME /data/data/com.termux/files/home | ||
| ENV LANG en_US.UTF-8 | ||
| ENV PATH /data/data/com.termux/files/usr/bin | ||
| ENV PREFIX /data/data/com.termux/files/usr | ||
| ENV TMPDIR /data/data/com.termux/files/usr/tmp | ||
| ENV TZ UTC | ||
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| COPY --from=bootstrap / / | ||
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| WORKDIR /data/data/com.termux/files/home | ||
| SHELL ["/data/data/com.termux/files/usr/bin/sh", "-c"] | ||
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| ARG ROOTFS | ||
| ARG TERMUX_APP_PACKAGE | ||
| ARG TERMUX_BASE_DIR | ||
| ARG TERMUX_PREFIX | ||
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| # Install generated rootfs containing bionic libc, | ||
| # toybox, mksh, iputils, dnsmasq, and termux bootstrap | ||
| COPY --chown=1000:1000 ${ROOTFS} / | ||
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| # Docker uses /bin/sh by default, but we don't have it. | ||
| # This ENV PATH line selects /system/bin/sh. | ||
| # The final ENV PATH line later below then selects | ||
| # $TERMUX_PREFIX/bin/sh -> bash without having | ||
| # to add an additional SHELL line. | ||
| ENV PATH=/system/bin | ||
| SHELL ["sh", "-c"] | ||
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| # Install updates and cleanup | ||
| # Start dnsmasq to resolve hostnames, and, | ||
| # for some reason the -c argument of toybox-su is not working, | ||
| # so this odd-looking script forces the update process | ||
| # to work using the -s argument of toybox-su instead, which is working. | ||
| RUN sh -T /dev/ptmx -c "$TERMUX_PREFIX/bin/dnsmasq -u root -g root --pid-file=/dnsmasq.pid" && \ | ||
| sleep 1 && \ | ||
| echo '#!/system/bin/sh' > /update.sh && \ | ||
| echo "PATH=$TERMUX_PREFIX/bin" >> /update.sh && \ | ||
| echo 'pkg update' >> /update.sh && \ | ||
| echo 'apt-get upgrade -o Dpkg::Options::=--force-confnew -y' >> /update.sh && \ | ||
| chmod +x /update.sh && \ | ||
| su system -s /update.sh && \ | ||
| rm -f /update.sh && \ | ||
| rm -rf ${TERMUX_PREFIX}/var/lib/apt/* && \ | ||
| rm -rf ${TERMUX_PREFIX}/var/log/apt/* && \ | ||
| rm -rf /data/data/${TERMUX_APP_PACKAGE}/cache/apt/* | ||
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| ENV ANDROID_DATA=/data | ||
| ENV ANDROID_ROOT=/system | ||
| ENV HOME=${TERMUX_BASE_DIR}/home | ||
| ENV LANG=en_US.UTF-8 | ||
| ENV PATH=${TERMUX_PREFIX}/bin | ||
| ENV PREFIX=${TERMUX_PREFIX} | ||
| ENV TMPDIR=${TERMUX_PREFIX}/tmp | ||
| ENV TZ=UTC | ||
| ENV TERM=xterm | ||
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| WORKDIR ${TERMUX_BASE_DIR}/home | ||
| ENTRYPOINT ["/entrypoint.sh"] | ||
| CMD ["/data/data/com.termux/files/usr/bin/login"] | ||
| CMD ["login"] |
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