Update entrypoint.sh (#2)

* Update entrypoint.sh

* Add JuliaFormatter at top of format.jl

* Try different way of adding JuliaFormatter

Dockerfile

@@ -9,8 +9,6 @@ LABEL "repository"="https://github.com/domluna/JuliaFormatter-action"
 LABEL "homepage"="https://github.com/domluna/JuliaFormatter-action"
 LABEL "maintainer"="Dominique Luna <[email protected]>"
 
-RUN julia -e 'using Pkg; Pkg.add("JuliaFormatter"); using JuliaFormatter'
-
 COPY format.jl /format.jl
 COPY entrypoint.sh /entrypoint.sh
 

entrypoint.sh

@@ -2,4 +2,4 @@
 set -e
 set -o pipefail
 
-/format.jl "$@"
+julia format.jl "$@"

format.jl

@@ -1,7 +1,24 @@
 #!/usr/bin/env julia
 
-println(pwd())
-println(readdir())
+import Pkg
+
+if isfile("Project.toml")
+    # Okay, we're in $GITHUB_WORKSPACE, and we have a Julia package.
+    project = read("Project.toml", String)
+    if occursin("uuid = \"98e50ef6-434e-11e9-1051-2b60c6c9e899\"", project)
+        # This package is JuliaFormatter itself. Let's use the copy stored here
+        # instead of the last taged version
+        Pkg.add(Pkg.PackageSpec(path = pwd()))
+    else
+        # This is a package that's not JuliaFormatter. Just use the last tagged
+        # version of JuliaFormatter.jl.
+        Pkg.add("JuliaFormatter")
+    end
+else
+    # This doesn't look like a standard Julia package, but it might be a script.
+    # In any case, it isn't JuliaFormatter.jl.
+    Pkg.add("JuliaFormatter")
+end
 
 using JuliaFormatter