Dockerfile for Alpine-based Julia 1.5 added

Author: Benjamin

1.5-rc/alpine/Dockerfile

@@ -0,0 +1,23 @@
+FROM alpine:latest
+
+RUN apk update && \
+    apk upgrade --no-cache && \
+    apk add --no-cache wget tar
+
+ENV JULIA_PATH /usr/local/julia 
+ENV PATH $JULIA_PATH/bin:$PATH
+
+# https://julialang.org/downloads/
+ENV JULIA_VERSION 1.5.0-rc1
+ENV JULIA_URL https://julialang-s3.julialang.org/bin/musl/x64/1.5/julia-${JULIA_VERSION}-musl-x86_64.tar.gz
+ENV JULIA_GPG 43e3a30133aee14657cc8984cc51e8f308ac1978e4c5986f4c976b8e8747194f
+
+RUN mkdir ${JULIA_PATH} && \
+    wget -q ${JULIA_URL} && \ 
+    echo "${JULIA_GPG}  julia-${JULIA_VERSION}-musl-x86_64.tar.gz" | sha256sum -c - && \ 
+    tar -xzf "julia-${JULIA_VERSION}-musl-x86_64.tar.gz" -C ${JULIA_PATH} --strip-components=1 && \ 
+    rm "julia-${JULIA_VERSION}-musl-x86_64.tar.gz" && \
+    julia --version # smoke test
+
+
+CMD ["julia"]