Update Dockerfile

Dockerfile

@@ -72,7 +72,11 @@ RUN apt-get update && apt-get install -y ghc cabal-install && rm -rf /var/lib/ap
 # -----------------------------
 # Julia
 # -----------------------------
-RUN apt-get update && apt-get install -y julia && rm -rf /var/lib/apt/lists/*
+RUN JULIA_VERSION=1.11.3 \
+    && wget https://julialang-s3.julialang.org/bin/linux/x64/1.11/julia-$JULIA_VERSION-linux-x86_64.tar.gz \
+    && tar -xzf julia-$JULIA_VERSION-linux-x86_64.tar.gz -C /opt/ \
+    && ln -s /opt/julia-$JULIA_VERSION/bin/julia /usr/local/bin/julia \
+    && rm julia-$JULIA_VERSION-linux-x86_64.tar.gz
 
 # -----------------------------
 # Scala + sbt