Move from docker to podman

Dockerfile

@@ -1,28 +0,0 @@
-# SPDX-FileCopyrightText: 2021 Matteo Settenvini <matteo.settenvini@montecristosoftware.eu>
-# SPDX-License-Identifier: CC0-1.0
-
-FROM docker.io/rust:latest@sha256:4f1d43c216d995c2f734d7c682bc3e2abe3e110961cda4ae0743ce3944e673a2
-
-ENV DEBIAN_FRONTEND noninteractive
-
-RUN apt update && \
-    apt install -y \
-        libssl-dev \
-        pkg-config \
-        python3-pip \
-    && \
-    rm -rf /var/lib/apt/lists/*
-
-RUN pip3 install reuse
-
-RUN rustup component add rustfmt
-
-RUN cargo install --locked -f -- \
-        cargo-tarpaulin \
-        cargo-deny \
-        cargo2junit \
-    && \
-    rm -rf "${HOME}/.cargo/registry" "${HOME}/.cargo/git"
-
-ENTRYPOINT []
-CMD ["/bin/bash"]