Merge branch 'johnnychen94-jc/julia'

dockerfiles/julia/Dockerfile

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+# For the details and usage of this docker script, please refer to:
+# * https://github.com/tuna/tunasync-scripts/pull/71
+# * https://github.com/tuna/issues/issues/837
+
+# jill.py requires at least Python 3.6
+FROM python:3.6
+LABEL description="A community maintained docker script to set up julia mirror easily."
+LABEL maintainer="Johnny Chen <johnnychen94@hotmail.com>"
+
+ENV JULIA_DEPOT_PATH="/tmp/julia"
+ENV JULIA_STATIC_DIR="/julia/static"
+ENV JULIA_CLONES_DIR="/julia/clones"
+
+# jill.py provides two functionalities:
+#   1) mirror julia binary releases
+#   2) install julia in one line
+# FYI: the jill API is quite stable so the version doesn't matter much (it could be okay to set >=0.6.9)
+RUN pip install --upgrade pip && \
+    pip install jill==0.6.9 && \
+    pip cache purge
+
+# StorageServer.jl is used to set up a *static* storage server for julia packages, it requires at least Julia 1.4
+# The details of the storage protocol can be found in https://github.com/JuliaLang/Pkg.jl/issues/1377
+RUN jill install 1.4 --confirm
+
+# StorageServer.jl is an experimental toolkit and it won't be registered in General
+# The API is likely to be changed in the future, so we fix the version here for stability consideration
+RUN julia -e 'using Pkg; pkg"add https://github.com/johnnychen94/StorageServer.jl#v0.1.0-beta.1"'
+
+WORKDIR /julia
+CMD /bin/bash

julia.sh

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+#!/bin/bash
+set -e
+BASE_URL=${TUNASYNC_UPSTREAM_URL:-"pkg.julialang.org"}
+[[ -d "${TUNASYNC_WORKING_DIR}" ]]
+cd "${TUNASYNC_WORKING_DIR}"
+exec julia -e "using StorageServer; mirror_tarball(\"registries/General\", [\"$BASE_URL\"])"
+