Add explicit Forgejo deployment structure with artifact build pipeline

- Introduce clear directory separation for docker, infra, ci, and config
- Add CloudFormation pipeline for S3 → CodeBuild → ECR
- Implement explicit artifact build script for flat deployment zip
- Provide example runtime configuration and ignore secrets

docker/entrypoint.sh

@@ -0,0 +1,50 @@
+#!/bin/sh
+set -e
+
+# Define the target configuration file path where Forgejo (or Gitea) expects it.
+CONFIG_DIR="/var/lib/gitea/custom/conf"
+CONFIG_FILE="${CONFIG_DIR}/app.ini"
+
+# Define the path to the default configuration file bundled in the image.
+DEFAULT_CONFIG="/defaults/app.ini"
+
+# Read the optional environment variable to force the configuration update.
+# Set FORCE_COPY_APP_CONF=true to force overwriting the configuration file.
+FORCE_COPY=${FORCE_COPY_APP_CONF:-false}
+
+echo "Starting container initialization..."
+
+# If the force option is enabled, remove the existing configuration file (if any)
+if [ "$FORCE_COPY" = "true" ]; then
+    echo "Force option enabled. Removing any existing configuration file at ${CONFIG_FILE}..."
+    rm -f "$CONFIG_FILE"
+fi
+
+# If the configuration file does not exist, prepopulate it from the default copy.
+if [ ! -f "$CONFIG_FILE" ]; then
+    echo "Configuration file not found at ${CONFIG_FILE}."
+    echo "Prepopulating the EFS volume with the default configuration."
+
+    # Make sure the configuration directory exists.
+    mkdir -p "$CONFIG_DIR"
+
+    # Copy the default configuration file into the mounted volume.
+    cp "$DEFAULT_CONFIG" "$CONFIG_FILE"
+
+    # Set proper ownership and permissions.
+    # Replace '1000:1000' with the UID:GID used by Forgejo if different.
+    chown 1000:1000 "$CONFIG_FILE"
+    chmod 644 "$CONFIG_FILE"
+
+    echo "Prepopulation complete. Configuration is now available at ${CONFIG_FILE}."
+else
+    echo "Configuration file already exists at ${CONFIG_FILE}. Skipping prepopulation."
+fi
+
+# Optionally, log the first few lines of the configuration file for verification.
+echo "Current configuration (first few lines):"
+head -n 10 "$CONFIG_FILE"
+
+# Hand over execution to the original entrypoint.
+# The official Forgejo image typically uses the entrypoint at '/usr/local/bin/docker-entrypoint.sh'
+exec /usr/local/bin/docker-entrypoint.sh "$@"