Initial mautrix-signal Cloudron package

Dockerfile.cloudron

@@ -0,0 +1,44 @@
+FROM cloudron/base:5.0.0@sha256:04fd70dbd8ad6149c19de39e35718e024417c3e01dc9c6637eaf4a41ec4e596c
+
+# Install dependencies
+RUN apt-get update && apt-get install -y \
+    curl \
+    ca-certificates \
+    netcat-openbsd \
+    bash \
+    jq \
+    yq \
+    git \
+    build-essential \
+    libolm-dev \
+    gosu \
+    && apt-get clean \
+    && rm -rf /var/lib/apt/lists/*
+
+# Install Go
+ENV GO_VERSION=1.24.0
+RUN curl -LO https://golang.org/dl/go${GO_VERSION}.linux-amd64.tar.gz \
+    && tar -C /usr/local -xzf go${GO_VERSION}.linux-amd64.tar.gz \
+    && rm go${GO_VERSION}.linux-amd64.tar.gz
+ENV PATH="/usr/local/go/bin:$PATH"
+
+# Create app directories
+RUN mkdir -p /app/code /app/pkg /app/data
+WORKDIR /app/code
+
+# Download and build mautrix-signal
+RUN git clone --branch v0.2512.0 https://github.com/mautrix/signal.git . \
+    && go build -o /app/pkg/mautrix-signal ./cmd/mautrix-signal
+
+# Copy startup script
+COPY start.sh /app/pkg/
+
+# Set volumes and environment
+VOLUME /app/data
+ENV UID=1337 GID=1337
+
+# Add health check endpoint - check if the appservice port is responding
+HEALTHCHECK --interval=60s --timeout=10s --start-period=30s --retries=3 \
+    CMD nc -z localhost 29328 || exit 1
+
+CMD ["/app/pkg/start.sh"]