diff --git a/extras/docker/Dockerfile b/extras/docker/Dockerfile
index 4a3f7dd..55b3b80 100644
--- a/extras/docker/Dockerfile
+++ b/extras/docker/Dockerfile
@@ -36,9 +36,6 @@ ARG DOWNLOAD
 ARG SOURCE_BRANCH
 ARG PACKAGE_MANAGER
 
-SHELL ["/bin/bash", "-o", "pipefail", "-c"]
-
-
 # hadolint ignore=DL3002
 USER root
 # Ensure that the chosen package manger is supported by this Dockerfile
@@ -53,6 +50,9 @@ RUN \
 		echo -e "\033[0;33mWARNING: Overriding default package manager. Using \"${PACKAGE_MANAGER}\" .\033[0m"; \
 		yum install -y unzip; \
 		yum clean all; \
+	elif [ "${PACKAGE_MANAGER}" = "apk"  ]; then \
+		echo -e "\033[0;33mWARNING: Overriding default package manager. Using \"${PACKAGE_MANAGER}\" .\033[0m"; \
+		apk --no-cache --update-cache add gcc python3 python3-dev py-pip build-base wget curl; \
 	else \
 	 	echo -e "\033[0;31mERROR: Package Manager \"${PACKAGE_MANAGER}\" not supported.\033[0m"; \
 	 	exit 1; \
@@ -178,6 +178,7 @@ LABEL "org.nodejs.version"=${NODE_VERSION}
 COPY --from=builder /opt/fiware-pep-proxy /opt/fiware-pep-proxy
 WORKDIR /opt/fiware-pep-proxy
 
+# Node by default, use 406 for Alpine, 1001 for UBI,
 USER ${USER}
 ENV NODE_ENV=production
 # Ports used by application
diff --git a/extras/docker/README.md b/extras/docker/README.md
index 1080114..d1e9eb1 100644
--- a/extras/docker/README.md
+++ b/extras/docker/README.md
@@ -101,6 +101,17 @@ sudo docker build -t pep-proxy \
   --build-arg USER=1001 . --no-cache
 ```
 
+To create a container based on [Alpine Linux](https://alpinelinux.org/about/) add `BUILDER`, `DISTRO`, `PACKAGE_MANAGER`
+and `USER` parameters as shown:
+
+```console
+docker build -t pep-proxy \
+  --build-arg BUILDER=node:16-alpine \
+  --build-arg DISTRO=node:16-alpine \
+  --build-arg PACKAGE_MANAGER=apk . \
+  --build-arg USER=406 . --no-cache
+```
+
 Currently, the following `--build-arg` parameters are supported:
 
 | Parameter           | Description                                                                                                                                                                                                                                                                             |