BTHLABS-0000: development workflow

Co-authored-by: Tomek Wójcik <labs@tomekwojcik.pl>
Co-committed-by: Tomek Wójcik <labs@tomekwojcik.pl>

.gitea/actions/get-build-options/action.yaml

@@ -0,0 +1,26 @@
+name: "Get Build Options"
+description: "Sanitizies and unifies the environment into build options"
+outputs:
+  short-sha:
+    description: "Shortened hash if the current commit"
+  build-arch:
+    description: "Docker-compatible representation of build arch"
+  build-platform:
+    description: "Docker-compatible representation of build platform"
+runs:
+  using: "composite"
+  steps:
+    - name: "Compute Build Options"
+      shell: "bash"
+      run: |
+        set -x
+        SHORT_SHA="${GITHUB_SHA::8}"
+        BUILD_ARCH="amd64"
+        BUILD_PLATFORM="linux/amd64"
+        if [ "${RUNNER_ARCH}" = "ARM64" ];then
+          BUILD_ARCH="arm64"
+          BUILD_PLATFORM="linux/arm64"
+        fi
+        echo "short-sha=$SHORT_SHA" >> $GITHUB_OUTPUT
+        echo "build-arch=$BUILD_ARCH" >> $GITHUB_OUTPUT
+        echo "build-platform=$BUILD_PLATFORM" >> $GITHUB_OUTPUT