feat: Move module run logic into its own script (#168)

This will help make the Containerfile just a little bit easier to read
(ignoring all the mounts lol). This would also allow us to add logic
later to support modules that run executables other than `*.sh`.

.github/workflows/build-pr.yml

@@ -53,7 +53,7 @@ jobs:
         id: build
         run: |
           if [ -n "${{ github.token }}" ]; then
-            earthly --ci --push +exports-script
+            earthly --ci --push +build-scripts
             echo "export=true" >> "$GITHUB_OUTPUT"
           fi
           earthly --ci +build

Earthfile

@@ -11,7 +11,7 @@ all:
 
 build:
 	WAIT
-		BUILD +exports-script
+		BUILD +build-scripts
 	END
 	BUILD +lint
 	BUILD +test
@@ -36,14 +36,17 @@ install:
 
 	SAVE ARTIFACT target/$BUILD_TARGET/release/bluebuild
 
-exports-script:
+build-scripts:
 	FROM alpine
 	LABEL org.opencontainers.image.source="https://github.com/blue-build/cli"
-	COPY exports.sh /
-	RUN chmod +x exports.sh
+	COPY --dir scripts/ /
+	FOR script IN $(ls /scripts | grep -e '.*\.sh$')
+		RUN echo "Making ${script} executable" && \
+			chmod +x scripts/${script}
+	END
 
 	ARG EARTHLY_GIT_HASH
-	SAVE IMAGE --push $IMAGE:$EARTHLY_GIT_HASH-exports
+	SAVE IMAGE --push $IMAGE:$EARTHLY_GIT_HASH-build-scripts
 
 common:
 	FROM ghcr.io/blue-build/earthly-lib/cargo-builder

scripts/run_module.sh

@@ -0,0 +1,32 @@
+#!/usr/bin/env bash
+
+set -euo pipefail
+
+# Function to print a centered text banner within a specified width
+print_banner() {
+  local term_width=120
+
+  local text=" ${1} "        # Text to print
+  local padding="$(printf '%0.1s' '='{1..600})"
+  local padlen=0
+
+  if (( ${#text} < term_width )); then
+    padlen=$(( (term_width - ${#text}) / 2 ))
+  fi
+
+  printf '%*.*s%s%*.*s\n' 0 "$padlen" "$padding" "$text" 0 "$padlen" "$padding"
+}
+
+title_case() {
+  echo $(tr '[:lower:]' '[:upper:]' <<< ${1:0:1})${1:1}
+}
+
+module=$1
+params=$2
+script_path="/tmp/modules/${module}/${module}.sh"
+
+print_banner "Start $(title_case ${module}) Module"
+chmod +x ${script_path}
+${script_path} ${params}
+print_banner "End $(title_case ${module}) Module"
+ostree container commit

template/templates/modules/modules.j2

@@ -30,14 +30,10 @@ RUN \
       {%- if type == "akmods" %}
   --mount=type=bind,from=stage-akmods-{{ module.generate_akmods_info(os_version).stage_name }},src=/rpms,dst=/tmp/rpms,rw \
       {%- endif %}
-  --mount=type=bind,from=ghcr.io/blue-build/cli:{{ exports_tag }}-exports,src=/exports.sh,dst=/tmp/exports.sh \
+  --mount=type=bind,from=ghcr.io/blue-build/cli:{{ exports_tag }}-build-scripts,src=/scripts/,dst=/tmp/scripts/ \
   --mount=type=cache,dst=/var/cache/rpm-ostree,id=rpm-ostree-cache-{{ recipe.name }}-{{ recipe.image_version }},sharing=locked \
-  echo "========== Start {{ type|capitalize }} module ==========" \
-  && chmod +x /tmp/modules/{{ type }}/{{ type }}.sh \
-  && source /tmp/exports.sh \
-  && /tmp/modules/{{ type }}/{{ type }}.sh '{{ module.print_module_context() }}' \
-  && echo "========== End {{ type|capitalize }} module ==========" \
-  && ostree container commit
+  source /tmp/scripts/exports.sh \
+  && /tmp/scripts/run_module.sh {{ type }} '{{ module.print_module_context() }}'
     {%- endif %}
   {%- endif %}
 {%- endfor %}