Fix CI on Julia nightly

[DilumAluthge]

No description provided.

[codecov]

Codecov Report

Merging #108 (ed92c64) into master (d98259c) will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##            master      #108   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files           17        17           
  Lines          350       363   +13     
=========================================
+ Hits           350       363   +13     

Impacted Files	Coverage Δ
src/generate_install_packages.jl	100.00% <ø> (ø)
src/generate_packagecompiler_run.jl	100.00% <ø> (ø)
src/docker.jl	100.00% <0.00%> (ø)
src/types_config.jl	100.00% <0.00%> (ø)
src/config_to_template.jl	100.00% <0.00%> (ø)
src/generate_helper_files.jl	100.00% <0.00%> (ø)
src/generate_precompile_execution.jl	100.00% <0.00%> (ø)

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