added builder Dockerfile

.woodpecker.yml

@@ -0,0 +1,28 @@
+# Build and publish Docker images for multible architectures.
+# 
+# Pushing an image to codeberg as container registry,
+# package owner will be the repo owner.
+#
+# this config also shows usage of yaml aliases and
+# was taken from https://codeberg.org/6543/docker-images/src/commit/37e29c227717c1c07d2776cddcf14725bf952875/.woodpecker/hello.yml
+
+when:
+  branch: main
+
+steps:
+  publish:
+    image: woodpeckerci/plugin-docker-buildx
+    settings:
+      dockerfile: builder/Dockerfile
+      platforms: linux/arm64/v8,linux/amd64
+      repo: git.jmbit.de/filegate/utility-containers
+      registry: git.jmbit.de
+      tags: 
+        - builder-latest
+        - builder
+      username: jmb
+      password:
+        from_secret: forgejo_token
+    when:
+      event: push
+

builder/Dockerfile

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+FROM docker.io/library/golang
+LABEL authors="Johannes Bülow <johannes.buelow@jmbit.de>"
+# Get all the stuff for CGO and Podman bindings
+RUN export DEBIAN_FRONTEND="noninteractive" \
+  && apt-get update \
+  && apt-get install --no-install-recommends -y software-properties-common \
+  && apt-get update \
+  && apt-get install --no-install-recommends -y \
+    bash \
+    binutils \
+    ca-certificates \
+    clang \
+    curl \
+    g++ \
+    gcc \
+    git \
+    libc6-dev \
+    libssl-dev \
+	 libdevmapper-dev \
+    llvm \
+    make \
+    pkg-config \
+    tzdata \
+    uuid \
+	libgpgme-dev \
+	libbtrfs-dev \
+	golang-github-containerd-btrfs-dev \
+  && apt-get -y autoremove \
+  && apt-get clean -y \
+  && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/* \
+  && ln -sf /usr/include/asm-generic /usr/include/asm
+WORKDIR /usr/local/src
+COPY ./ ./
+RUN go get . && go mod download && go build -o filegate