Added basic support for DevContainer feature

.github/workflows/release.yml

@@ -12,6 +12,7 @@ permissions:
 jobs:
 
   prepare:
+    name: Preparation
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
@@ -112,3 +113,23 @@ jobs:
           NUGET_AUTH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         run: | 
           dotnet nuget push ./outputs/packages/*.nupkg --api-key $NUGET_AUTH_TOKEN --source https://nuget.pkg.github.com/Kralizek/index.json --skip-duplicate
+
+  feature:
+    name: DevContainer feature
+    needs: prepare
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3.3.0
+
+      - name: Get tag name
+        id: get_tag_name  
+        run: echo "::set-output name=tag::$(echo "${{ github.ref }}" | grep -oP 'refs/tags/\K(.+)')"
+
+      - name: Publish feature
+        uses: devcontainers/action@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          base-path-to-features: './features'
+          publish-features: true

features/hyde/devcontainer-feature.json

@@ -0,0 +1,17 @@
+{
+    "id": "hyde",
+    "name": "Hyde",
+    "description": "A tool to handle Jekyll posts and pages",
+    "documentationURL": "https://github.com/Kralizek/Hyde",
+    "installsAfter": [
+        "ghcr.io/devcontainers/features/common-utils"
+    ],
+    "options": {
+        "version": {
+            "type": "string",
+            "proposals": ["latest"],
+            "default": "latest",
+            "description": "Select the version of Hyde to install, if not latest."
+        }
+    }
+}

features/hyde/install.sh

@@ -0,0 +1,62 @@
+#!/usr/bin/env bash
+
+TOOL_VERSION=${VERSION:-"latest"}
+
+set -e
+
+find_version_from_git_tags() {
+    local variable_name=$1
+    local requested_version=${!variable_name}
+    if [ "${requested_version}" = "none" ]; then return; fi
+    local repository=$2
+    local prefix=${3:-"tags/v"}
+    local separator=${4:-"."}
+    local last_part_optional=${5:-"false"}    
+    if [ "$(echo "${requested_version}" | grep -o "." | wc -l)" != "2" ]; then
+        local escaped_separator=${separator//./\\.}
+        local last_part
+        if [ "${last_part_optional}" = "true" ]; then
+            last_part="(${escaped_separator}[0-9]+)?"
+        else
+            last_part="${escaped_separator}[0-9]+"
+        fi
+        local regex="${prefix}\\K[0-9]+${escaped_separator}[0-9]+${last_part}$"
+        local version_list="$(git ls-remote --tags ${repository} | grep -oP "${regex}" | tr -d ' ' | tr "${separator}" "." | sort -rV)"
+        if [ "${requested_version}" = "latest" ] || [ "${requested_version}" = "current" ] || [ "${requested_version}" = "lts" ]; then
+            declare -g ${variable_name}="$(echo "${version_list}" | head -n 1)"
+        else
+            set +e
+            declare -g ${variable_name}="$(echo "${version_list}" | grep -E -m 1 "^${requested_version//./\\.}([\\.\\s]|$)")"
+            set -e
+        fi
+    fi
+    if [ -z "${!variable_name}" ] || ! echo "${version_list}" | grep "^${!variable_name//./\\.}$" > /dev/null 2>&1; then
+        echo -e "Invalid ${variable_name} value: ${requested_version}\nValid values:\n${version_list}" >&2
+        exit 1
+    fi
+    echo "${variable_name}=${!variable_name}"
+}
+
+find_version_from_git_tags TOOL_VERSION https://github.com/Kralizek/Hyde
+
+mkdir -p /tmp/hydetool
+pushd /tmp/hydetool
+
+echo "Downloading Hyde..."
+
+wget https://github.com/Kralizek/Hyde/releases/download/v${TOOL_VERSION}/hyde-linux-x64.zip
+exit_code=$?
+
+set -e
+if [ "$exit_code" != "0" ]; then
+    echo "(!) hyde version ${TOOL_VERSION} failed to download."
+    exit 1
+fi
+
+popd
+
+pushd ~/.local/bin
+
+unzip /tmp/hydetool/hyde-linux-x64.zip
+
+rm -rf /tmp/hydetool