Extend install to support Linux

Signed-off-by: Juan Cruz Viotti <[email protected]>

install

@@ -4,14 +4,38 @@ set -o errexit
 set -o nounset
 
 UNAME="$(uname)"
+ARCH="$(uname -m)"
 
 if [ "$UNAME" = "Darwin" ]
 then
+  if [ "$ARCH" != "arm64" ]
+  then
+    echo "ERROR: There are no pre-built JSON Schema CLI binaries for macOS on $ARCH" 1>&2
+    echo "You might be able to build it from source" 1>&2
+    exit 1
+  fi
+
   echo "---- Attempting to install the JSON Schema CLI using Homebrew" 1>&2
   brew install intelligence-ai/apps/jsonschema
-  exit 0
+elif [ "$UNAME" = "Linux" ]
+then
+  OWNER="intelligence-ai"
+  REPOSITORY="jsonschema"
+  LATEST_TAG="$(curl --silent "https://api.github.com/repos/$OWNER/$REPOSITORY/releases/latest" \
+    | grep '"tag_name"' | cut -d ':' -f 2 | tr -d 'v" ,')"
+  PACKAGE_BASE_URL="https://github.com/$OWNER/$REPOSITORY/releases/download/v$LATEST_TAG"
+  PACKAGE_PLATFORM_NAME="$(echo "$UNAME" | tr '[:upper:]' '[:lower:]')"
+  PACKAGE_URL="$PACKAGE_BASE_URL/jsonschema-$LATEST_TAG-$PACKAGE_PLATFORM_NAME-$ARCH.zip"
+  OUTPUT="/usr/local"
+  TMP="$(mktemp -d)"
+  clean() { rm -rf "$TMP"; }
+  trap clean EXIT
+  curl --location --output "$TMP/artifact.zip" "$PACKAGE_URL" 
+  unzip "$TMP/artifact.zip" -d "$TMP/out"
+  mkdir -p "$OUTPUT/bin"
+  install -v -m 0755 "$TMP/out/jsonschema-$LATEST_TAG-$PACKAGE_PLATFORM_NAME-$ARCH/bin/jsonschema" "$OUTPUT/bin"
+else
+  echo "ERROR: I don't know how to install the JSON Schema CLI in $UNAME!" 1>&2
+  echo "Open an issue here: https://github.com/Intelligence-AI/jsonschema/issues" 1>&2
+  exit 1
 fi
-
-echo "ERROR: I don't know how to install the JSON Schema CLI in $UNAME!" 1>&2
-echo "Open an issue here: https://github.com/Intelligence-AI/jsonschema/issues" 1>&2
-exit 1