Add GitHub Actions workflow for pre-built telemt Docker images

Multi-arch (amd64 + arm64) build from pinned telemt commit.
Publishes to ghcr.io/samnet-dev/mtproxymax-telemt.

Author: SamNet-dev

.gitattributes

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+* text=auto
+*.sh text eol=lf
+LICENSE text eol=lf

.github/workflows/build-engine.yml

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+name: Build Telemt Engine
+
+on:
+  workflow_dispatch:
+    inputs:
+      telemt_commit:
+        description: 'Telemt commit hash to build from'
+        required: true
+        default: '43990c9'
+      version_tag:
+        description: 'Version tag (e.g. 3.0.0-43990c9)'
+        required: true
+        default: '3.0.0-43990c9'
+
+env:
+  REGISTRY: ghcr.io
+  IMAGE_NAME: ${{ github.repository_owner }}/mtproxymax-telemt
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
+
+    steps:
+      - name: Set up QEMU (for ARM builds)
+        uses: docker/setup-qemu-action@v3
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Log in to GitHub Container Registry
+        uses: docker/login-action@v3
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Create Dockerfile
+        run: |
+          cat > Dockerfile << 'EOF'
+          FROM rust:1-bookworm AS builder
+          ARG TELEMT_REPO=telemt/telemt
+          ARG TELEMT_COMMIT
+          RUN apt-get update && apt-get install -y --no-install-recommends git && \
+              rm -rf /var/lib/apt/lists/*
+          RUN git clone "https://github.com/${TELEMT_REPO}.git" /build
+          WORKDIR /build
+          RUN git checkout "${TELEMT_COMMIT}"
+          RUN cargo build --release && \
+              strip target/release/telemt 2>/dev/null || true && \
+              cp target/release/telemt /telemt
+
+          FROM debian:bookworm-slim
+          RUN apt-get update && \
+              apt-get install -y --no-install-recommends ca-certificates && \
+              rm -rf /var/lib/apt/lists/*
+          COPY --from=builder /telemt /usr/local/bin/telemt
+          RUN chmod +x /usr/local/bin/telemt
+          STOPSIGNAL SIGINT
+          ENTRYPOINT ["telemt"]
+          EOF
+
+      - name: Build and push multi-arch image
+        uses: docker/build-push-action@v6
+        with:
+          context: .
+          platforms: linux/amd64,linux/arm64
+          push: true
+          build-args: |
+            TELEMT_COMMIT=${{ github.event.inputs.telemt_commit }}
+          tags: |
+            ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:${{ github.event.inputs.version_tag }}
+            ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:latest
+          cache-from: type=gha
+          cache-to: type=gha,mode=max

LICENSE

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+MIT License
+
+Copyright (c) 2026 SamNet Technologies LLC
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

install.sh

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+#!/bin/bash
+# MTProxyMax Installer — SamNet Technologies LLC
+# Usage: curl -sL https://raw.githubusercontent.com/SamNet-dev/MTProxyMax/main/install.sh | sudo bash
+set -e
+
+REPO="SamNet-dev/MTProxyMax"
+BRANCH="main"
+INSTALL_DIR="/opt/mtproxymax"
+SCRIPT_URL="https://raw.githubusercontent.com/${REPO}/${BRANCH}/mtproxymax.sh"
+
+echo ""
+echo "  Installing MTProxyMax..."
+echo ""
+
+# Root check
+if [ "$(id -u)" -ne 0 ]; then
+    echo "ERROR: Run as root: sudo bash -c \"\$(curl -sL ${SCRIPT_URL})\"" >&2
+    exit 1
+fi
+
+# Download and run
+mkdir -p "$INSTALL_DIR"
+curl -fsSL "$SCRIPT_URL" -o "${INSTALL_DIR}/mtproxymax"
+chmod +x "${INSTALL_DIR}/mtproxymax"
+
+# Execute installer
+exec bash "${INSTALL_DIR}/mtproxymax" install