added docker file + gitea workflow

.gitea/workflows/build-image.yml

@@ -0,0 +1,24 @@
+name: Gitea Actions Demo
+
+on: ["push"]
+
+jobs:
+  build-image:
+    runs-on: ubuntu-latest
+    env:
+      image-name: private-projects/kaniko
+      major: 0
+      minor: 0
+      revision: 1
+
+    steps:
+    - name: Checkout main
+      uses: actions/checkout@v4
+
+    - name: Build Iamge
+      uses: https://gitea.thebobo.nl/private-projects/build/job/build-docker-image.yml@main
+      with:
+        major-version: ${{ env.major }}
+        minor-version: ${{ env.minor }}
+        revision-version: ${{ env.revision }}
+        image-name: ${{ env.image-name }}

Dockerfile

@@ -0,0 +1,26 @@
+FROM alpine as certs
+
+RUN apk --update add ca-certificates
+RUN mkdir /kaniko && \
+    wget -O /kaniko/jq \
+    https://github.com/jqlang/jq/releases/download/jq-1.7.1/jq-linux64 && \
+    chmod +x /kaniko/jq && \
+    wget -O /kaniko/reg \
+    https://github.com/genuinetools/reg/releases/download/v0.16.1/reg-linux-386 && \
+    chmod +x /kaniko/reg && \
+    wget -O /crane.tar.gz \
+    https://github.com/google/go-containerregistry/releases/download/v0.17.0/go-containerregistry_Linux_x86_64.tar.gz && \
+    tar -xvzf /crane.tar.gz crane -C /kaniko && \
+    rm /crane.tar.gz
+
+FROM gcr.io/kaniko-project/executor:v1.23.1-debug
+
+SHELL ["/busybox/sh", "-c"]
+
+COPY entrypoint.sh /
+COPY --from=certs /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/ca-certificates.crt
+COPY --from=certs /kaniko/jq /kaniko/jq
+COPY --from=certs /kaniko/reg /kaniko/reg
+COPY --from=certs /kaniko/crane /kaniko/crane
+
+ENTRYPOINT ["/entrypoint.sh"]