feat: add justfile + containerfile for local build testing

.gitignore

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+output/

Containerfile

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+FROM registry.fedoraproject.org/fedora:latest AS builder
+ARG TARGET_SPEC="${TARGET_SPEC:-staging/devpod/devpod.spec}"
+
+COPY . /app
+
+RUN dnf update -y && dnf upgrade -y && dnf install rpkg spectool -y && dnf clean all
+
+WORKDIR /app
+RUN cp -rf $(dirname $TARGET_SPEC)/* /tmp && \
+    rpkg --path $(dirname $TARGET_SPEC) spec --outdir /tmp --spec $(basename $TARGET_SPEC)
+
+WORKDIR /tmp
+RUN export SPEC=$(basename $TARGET_SPEC) && \
+    dnf -y builddep $SPEC && \
+    spectool -ag $SPEC -C /tmp && \
+    rpkg local --spec $SPEC --outdir /tmp && \
+    find /tmp
+
+FROM scratch AS artifacts
+
+COPY --from=builder /tmp/*/*.rpm /

Justfile

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+# Run renovate locally to test modules
+renovate dry-run="lookup" log-level="debug":
+    #!/usr/bin/env bash
+    if ! command -v "renovate" &> /dev/null ; then
+        echo "You need to install renovate first"
+        echo "It should be available on brew and on npm."
+        exit 1
+    fi
+    if [ "$GITHUB_COM_TOKEN" == "" ] ; then
+        echo "Warning: No Github token found, renovate will nag at you for this."
+        echo "Set it with GITHUB_COM_TOKEN=(your token)"
+    fi
+    LOG_LEVEL=${LOG_LEVEL:-debug} renovate --platform=local --dry-run={{dry-run}}
+    echo "Updates can be found in a section of the logs called \"packageFiles with updates\""
+
+build package="staging/devpod/devpod.spec":
+    #!/usr/bin/env bash
+    PKGNAME={{package}}
+    PKGNAME="${PKGNAME##*/}"
+    PKGNAME="${PKGNAME%.*}"
+    buildah bud -f Containerfile -t localhost/${PKGNAME}:latest --build-arg TARGET_SPEC={{package}} .
+
+extract package="staging/devpod/devpod.spec" extract_rpm="0":
+    #!/usr/bin/env bash
+    PKGNAME={{package}}
+    PKGNAME="${PKGNAME##*/}"
+    PKGNAME="${PKGNAME%.*}"
+    rm -rf output
+    mkdir -p output
+    podman export $(podman create localhost/${PKGNAME}:latest) | tar xf - -C output
+    if [ {{extract_rpm}} -ne 1 ] ; then
+        exit 0
+    fi
+    pushd output
+    for rpm_file in $(find . -iname "*.rpm"); do
+        rpm2cpio "$rpm_file" | cpio -idmv
+    done
+    popd
+
+clean:
+    rm -rf output