Gitea workflow configuration and Dockerfile

Dockerfile

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+# Minimalistic container for Zola site building from metadata
+# Contains: PowerShell, Zola, AWS CLI (S3), Git
+
+FROM alpine:3.20 AS builder
+
+ARG ZOLA_VERSION=0.22.0
+
+# Download and extract Zola
+RUN apk add --no-cache curl tar \
+    && curl -L "https://github.com/getzola/zola/releases/download/v${ZOLA_VERSION}/zola-v${ZOLA_VERSION}-x86_64-unknown-linux-musl.tar.gz" | tar xz -C /usr/local/bin
+
+# Final image based on PowerShell Alpine
+FROM mcr.microsoft.com/powershell:lts-alpine-3.20
+
+# Copy Zola from builder
+COPY --from=builder /usr/local/bin/zola /usr/local/bin/zola
+
+# Install minimal dependencies: git, aws-cli (for S3), ca-certificates
+RUN apk add --no-cache \
+    git \
+    aws-cli \
+    ca-certificates \
+    && rm -rf /var/cache/apk/*
+
+# Verify installations
+RUN pwsh -Version \
+    && zola --version \
+    && aws --version \
+    && git --version
+
+WORKDIR /workspace
+
+ENTRYPOINT ["/bin/sh", "-c"]