Specify Boost zip file name of dir it unzips to

.github/workflows/compile.yml

@@ -13,7 +13,8 @@ env:
 
   # Configuration type to build.
   BUILD_CONFIGURATION: Release
-  BOOST_URL: "https://boostorg.jfrog.io/artifactory/main/release/1.82.0/source/boost_1_82_0.zip"
+  BOOST_URL: "https://boostorg.jfrog.io/artifactory/main/release/1.82.0/source/"
+  BOOST_FILE: "boost_1_82_0" 
 
 jobs:
   compile:
@@ -70,7 +71,7 @@ jobs:
       uses: actions/cache@v3
       with:
         path: C:/vcpkg/packages/
-        key: ${{ runner.os }}-boost-v${{ env.BOOST_URL_SUFFIX }}--${{ hashFiles('vcpkg.json') }}
+        key: ${{ runner.os }}-boost-v${{ env.BOOST_FILE }}--${{ hashFiles('vcpkg.json') }}
 
 
     - name: Download Boost
@@ -79,9 +80,9 @@ jobs:
       run: |
         mkdir d:\boost\
         cd d:\boost
-        curl -L -o biscuit_boost.zip ${{ env.BOOST_URL }}
-        tar -xf biscuit_boost.zip
-        mv .\biscuit_boost .\boost_1_55_0
+        curl -L -o ${{ env.BOOST_FILE }}.zip ${{ env.BOOST_URL }}${{ env.BOOST_FILE }}.zip
+        tar -xf ${{ env.BOOST_FILE }}.zip
+        mv .\${{ env.BOOST_FILE }} .\boost_1_55_0
       # Renaming an env-versioned download to one of a different version is a terrible awful hack,
       # but I want to change the sDNA config and source as little as possible until I know it actually works