Added many, many more actions.

yq/yq/Dockerfile

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+# Container image that runs your code
+FROM debian:stable-slim
+
+RUN apt update && apt install -y \
+    wget
+
+ARG VERSION=v4.30.6
+ARG BINARY=yq_linux_amd64
+
+RUN wget https://github.com/mikefarah/yq/releases/download/${VERSION}/${BINARY} -O /usr/bin/yq && \
+    chmod +x /usr/bin/yq
+
+COPY entrypoint.sh /entrypoint.sh
+RUN chmod +x /entrypoint.sh
+
+ENTRYPOINT ["/entrypoint.sh"]

yq/yq/action.yaml

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+name: yq
+description: "Run yq commands."
+inputs:
+  command:
+    description: "Shell arguments to pass into yq."
+    required: true
+  program:
+    description: "Program to run instead of yq. Default: yq"
+    required: false
+    default: "yq"
+  catchErrors:
+    description: "Whether or not errors should be handled."
+    required: false
+outputs:
+  console:
+    description: "The console output of the command."
+runs:
+  env:
+    PROGRAM: ${{ inputs.program }}
+    CATCH_ERRORS: ${{ inputs.catchErrors }}
+  using: docker
+  image: Dockerfile
+  args:
+  - ${{ inputs.command }}

yq/yq/entrypoint.sh

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+#!/bin/bash
+COMMAND="$@"
+
+# yq -p json -o yaml file.json # json -> yaml
+# yq -p json -o xml file.json  # json -> xml
+# yq -p yaml -o json file.yaml # yaml -> json
+# yq -p yaml -o xml file.yaml  # yaml -> xml
+# yq -p xml -o json file.xml   # xml -> json
+# yq -p xml -o yaml file.xml   # xml -> yaml
+#https://github.com/mikefarah/yq
+PROGRAM=${PROGRAM:-"yq"}
+OUTPUT=$(bash -c "$PROGRAM $COMMAND")
+RESULT=$?
+
+#Output multiline strings.
+#https://trstringer.com/github-actions-multiline-strings/
+if [[ -n "$OUTPUT" ]]; then
+    echo "console<<EOF" >> "$GITHUB_OUTPUT"
+    echo "$OUTPUT" >> "$GITHUB_OUTPUT"
+    echo "EOF" >> "$GITHUB_OUTPUT"
+fi
+
+echo "exitCode=$RESULT" >> "$GITHUB_OUTPUT"
+
+if [[ "$CATCH_ERRORS" != "true" ]]; then
+    exit $RESULT
+fi