Add docker file

Dockerfile

@@ -0,0 +1,66 @@
+# SPDX-FileCopyrightText: 2026 Dipl.Phys. Peer Stritzinger GmbH
+# SPDX-License-Identifier: Apache-2.0
+FROM ubuntu:22.04
+
+#--- ENV -----------------------------------------------------------------------
+
+ENV WORKDIR=/calzone
+ENV LAUNCHER_SRC=$WORKDIR/launcher
+ENV BAKER_SRC=$WORKDIR/baker
+
+#--- Install requirements ------------------------------------------------------
+
+RUN BASIC="git cmake ca-certificates" && \
+    BUILD="autoconf automake libtool build-essential" && \
+    MUSL="musl-dev musl-tools" && \
+    apt-get update && \
+    apt-get install -y --no-install-recommends \
+        $BASIC $BUILD $MUSL && \
+    rm -rf /var/lib/apt/lists/*
+
+#--- Copy source ---------------------------------------------------------------
+WORKDIR $WORKDIR
+
+COPY . $WORKDIR
+
+#--- Install libcbor -----------------------------------------------------------
+WORKDIR $WORKDIR/libcbor
+RUN git clone https://github.com/PJK/libcbor.git .
+
+RUN CC=musl-gcc cmake -B _build \
+    -DCMAKE_C_COMPILER_AR=/usr/bin/ar \
+    -DCMAKE_C_COMPILER_RANLIB=/usr/bin/ranlib \
+    -DBUILD_SHARED_LIBS=OFF \
+    -DWITH_TESTS=OFF && \
+    cmake --build _build -j$(nproc)
+
+#--- Install libarchive --------------------------------------------------------
+WORKDIR $WORKDIR/libarchive
+RUN git clone https://github.com/libarchive/libarchive.git .
+
+RUN CC=musl-gcc cmake -B _build \
+    -DCMAKE_C_COMPILER_AR=/usr/bin/ar \
+    -DCMAKE_C_COMPILER_RANLIB=/usr/bin/ranlib \
+    -DENABLE_TEST=OFF \
+    -DENABLE_OPENSSL=OFF \
+    -DENABLE_ZLIB=OFF \
+    -DENABLE_BZip2=OFF \
+    -DENABLE_LZMA=OFF \
+    -DENABLE_ZSTD=OFF \
+    -DENABLE_LZ4=OFF \
+    -DENABLE_EXPAT=OFF \
+    -DENABLE_ICONV=OFF \
+    -DPOSIX_REGEX_LIB=NONE \
+    -DENABLE_LIBB2=OFF \
+    -DENABLE_LIBXML2=OFF && \
+    cmake --build _build -j$(nproc)
+
+#--- Build -----------------------------------------------------------------
+WORKDIR $WORKDIR
+
+RUN ./autogen.sh && \
+    ./configure && \
+    make && \
+    make check
+
+CMD ["/bin/bash"]

README.md

@@ -12,20 +12,26 @@ Both are built as part of the **calzone** project.
 ## Table of Contents
 
 - [calzone](#calzone)
-- [Build Instructions](#build-instructions)
-  - [Prerequisites](#prerequisites)
-  - [Static vs Dynamic Builds](#static-vs-dynamic-builds)
-  - [Bootstrap, Configure, Build](#bootstrap-configure-build)
-  - [Build Troubleshooting](#build-troubleshooting)
-  - [Cleaning Up](#cleaning-up)
+- [Getting Calzone](#getting-calzone)
+  - [Build From Source](#build-from-source)
+    - [Prerequisites](#prerequisites)
+    - [Static vs Dynamic Builds](#static-vs-dynamic-builds)
+    - [Bootstrap, Configure, Build](#bootstrap-configure-build)
+    - [Build Troubleshooting](#build-troubleshooting)
+    - [Cleaning Up](#cleaning-up)
+  - [Use the Dockerfile](#use-the-dockerfile)
+  - [Download Prebuilt Binaries](#download-prebuilt-binaries)
 - [Quickstart: build a sample self-extracting binary](#quickstart-build-a-sample-self-extracting-binary)
 - [Interpreter patching with PATCHELF_SET_INTERPRETER](#interpreter-patching-with-patchelf_set_interpreter)
 
-<a name="build-instructions"></a>
-## Build Instructions
+<a name="getting-calzone"></a>
+## Getting Calzone
+
+<a name="build-from-source"></a>
+### Build From Source
 
 <a name="prerequisites"></a>
-### Prerequisites
+##### Prerequisites
 
 - POSIX shell (`/bin/sh`)
 - GNU Autotools toolchain:
@@ -55,7 +61,7 @@ sudo apt install musl-dev musl-tools
 ```
 
 <a name="static-vs-dynamic-builds"></a>
-### Static vs Dynamic Builds
+##### Static vs Dynamic Builds
 
 By default, `configure` attempts to produce **fully static binaries** that are
 self-contained and do not depend on system shared libraries. This makes the
@@ -203,7 +209,7 @@ make
 This produces binaries that depend on system shared libraries at runtime.
 
 <a name="bootstrap-configure-build"></a>
-### Bootstrap, Configure, Build
+##### Bootstrap, Configure, Build
 
 From the repository root:
 
@@ -269,7 +275,7 @@ From the repository root:
    Use `DESTDIR` or `--prefix` to control the installation target.
 
 <a name="build-troubleshooting"></a>
-### Build Troubleshooting
+##### Build Troubleshooting
 
 #### "libcbor headers not found"
 
@@ -340,13 +346,46 @@ sudo apt install musl-dev musl-tools
 ```
 
 <a name="cleaning-up"></a>
-### Cleaning Up
+##### Cleaning Up
 
 - `make clean` removes build artifacts from the source tree.
 - `make distclean` additionally removes files generated by `configure`.
 - `git clean -xfd` resets the tree completely (use with care; this deletes
   untracked files).
 
+<a name="docker-build"></a>
+### Use the Dockerfile
+
+The repository includes a `Dockerfile` that installs the required build tools,
+builds local copies of `libcbor` and `libarchive`, and then runs the project
+build inside the container.
+
+Build the image from the repository root:
+
+```sh
+docker build -t calzone:local .
+```
+
+Start an interactive shell in the built image:
+
+```sh
+docker run --rm -it calzone:local /bin/bash
+```
+
+Inside the container you can find the binaries under `/calzone/baker/baker` and `/calzone/launcher/launcher`
+
+<a name="download-prebuilt-binaries"></a>
+### Download Prebuilt Binaries
+
+Prebuilt Linux binaries are attached to GitHub releases for:
+
+- `launcher-linux-amd64`
+- `launcher-linux-arm64`
+- `baker-linux-amd64`
+- `baker-linux-arm64`
+
+Each release asset also includes a matching `.sha256` checksum file.
+
 <a name="quickstart-build-a-sample-self-extracting-binary"></a>
 ## Quickstart: build a sample self-extracting binary