Created action and added some information to README.md

action.yml

@@ -0,0 +1,36 @@
+name: Build RPM
+description: "Builds rpm for given spec file"
+inputs:
+  spec-file-path:
+    description: "Path to spec file for rpm"
+    required: true
+
+runs:
+  using: "composite"
+  steps:
+    - name: Setup toolbox environment
+      shell: bash
+      run: |
+        toolbox run sudo dnf -y rpmdevtools
+        toolbox run rpmdev-setuptree
+
+    - name: Install Dependencies
+      env:
+        SPEC_FILE_PATH: ${{ inputs.spec-file-path }}
+      shell: bash
+      run: |
+        toolbox run sudo dnf -y builddep $SPEC_FILE_PATH
+
+    - name: Download Source
+      env:
+        SPEC_FILE_PATH: ${{ inputs.spec-file-path }}
+      shell: bash
+      run: |
+        toolbox run rpmdev-spectool -g -C ~/rpmbuild/SOURCES $SPEC_FILE_PATH
+
+    - name: Build packages
+      env:
+        SPEC_FILE_PATH: ${{ inputs.spec-file-path }}
+      shell: bash
+      run: |
+        toolbox run rpmbuild --nodebuginfo --bb $SPEC_FILE_PATH