Add linux support

.github/FUNDING.yml

@@ -0,0 +1,3 @@
+# These are supported funding model platforms
+
+custom: https://cuedo.com.au/contact

.github/workflows/test-macos-latest.yml

@@ -0,0 +1,16 @@
+on: [push]
+name: test-macos-latest
+jobs:
+  test-action:
+    name: Test
+    runs-on: macOS-latest
+
+    steps:
+      - uses: actions/checkout@v3
+      - uses: ./
+        with:
+          uri: https://google.com/
+          filename: google.html
+          user-agent: "Cuedo"
+          max-redirections: 11
+          retries: 3

.github/workflows/test-ubuntu-latest.yml

@@ -0,0 +1,16 @@
+on: [push]
+name: test-ubuntu-latest
+jobs:
+  test-action:
+    name: Test
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v3
+      - uses: ./
+        with:
+          uri: https://google.com/
+          filename: google.html
+          user-agent: "Cuedo"
+          max-redirections: 11
+          retries: 3

action.yml

@@ -7,13 +7,14 @@ branding:
 inputs:
   method:
     description: "Specifies the method used for the web request"
-    default: "get"
+    default: 'GET' # Must be all-caps
   uri:
     required: true
     description: "Invoke the specified URI"
   content-type:
     description: "Set the content type of the request"
     default: 'application/json'
+  # Shall we allow an Accept: setting for the content type?
   filename:
     description: "Save the output to the specified file"
   user-agent:
@@ -36,13 +37,24 @@ runs:
     - name: Invoke URI (Linux)
       if: runner.os == 'Linux'
       shell: bash
-      run: export DISPLAY="127.0.0.1:10.0"
-
+      env:
+        METHOD: ${{ format('-X ''{0}''', inputs.method) }}
+        URI: ${{ format(' ''{0}''', inputs.uri) }}
+        CONTENT_TYPE: ${{ format(' -H ''Content-Type: {0}''', inputs.content-type) }}
+        FILENAME: ${{ inputs.filename != '' && format(' -o ''{0}''', inputs.filename) || '' }}
+        USER_AGENT: ${{ inputs.user-agent != '' && format(' --user-agent ''{0}''', inputs.user-agent) || '' }}
+        MAX_REDIRECTIONS: ${{ inputs.max-redirections != 5 && format(' --max-redirs {0}', inputs.max-redirections) || '' }}
+        RETRIES: ${{ inputs.retries != 3 && format(' --retry {0} --retry-all-errors', inputs.retries) || '' }}
+        RETRY_INTERVAL: ${{ inputs.retry-interval != 5 && format(' -retry-delay {0}', inputs.retry-interval) || '' }}
+        RETRY_TIMEOUT: ${{ inputs.retry-timeout != 5 && format(' --retry-max-time {0}', inputs.retry-timeout) || '' }}
+      run: |
+        curl ${{env.METHOD}}${{env.CONTENT_TYPE}}${{env.FILENAME}}${{env.USER_AGENT}}${{env.MAX_REDIRECTIONS}}${{env.RETRIES}}${{env.RETRY_INTERVAL}}${{env.RETRY_TIMEOUT}}${{env.URI}}
+
     - name: Invoke URI (Windows)
       if: runner.os == 'Windows'
       shell: pwsh
       env:
-        METHOD: ${{ format(' -Method ''{0}''', inputs.method) }}
+        METHOD: ${{ format('-Method ''{0}''', inputs.method) }}
         URI: ${{ format(' -Uri ''{0}''', inputs.uri) }}
         CONTENT_TYPE: ${{ format(' -ContentType ''{0}''', inputs.content-type) }}
         FILENAME: ${{ inputs.filename != '' && format(' -PassThru -OutFile ''{0}''', inputs.filename) || '' }}