diff --git a/flyway/Dockerfile b/flyway/Dockerfile
index 89373f4..ea19d12 100644
--- a/flyway/Dockerfile
+++ b/flyway/Dockerfile
@@ -1,24 +1,26 @@
-ARG UPSTREAM_VERSION
-
 ##############
 # MIGRATIONS #
 ##############
-FROM debian:bullseye-slim as postgres-migrations
+FROM alpine:3.15.10 as postgres-migrations
 ARG UPSTREAM_VERSION
 WORKDIR /usr/src/app
-RUN apt update && apt install -y wget
-# Get migrations from consensys web3signer repo
-# path is /usr/src/app/web3signer-21.10.0/slashing-protection/src/main/resources/migrations/postgresql
+
+# Install wget and other dependencies, if necessary
+RUN apk --no-cache add wget
+
+# Get migrations from ConsenSys web3signer repository
 RUN wget -q https://github.com/ConsenSys/web3signer/archive/refs/tags/${UPSTREAM_VERSION}.tar.gz && \
-    tar -xvf ${UPSTREAM_VERSION}.tar.gz
+    tar -xvf ${UPSTREAM_VERSION}.tar.gz && \
+    rm ${UPSTREAM_VERSION}.tar.gz
 
 ##########
 # FLYWAY #
 ##########
 FROM flyway/flyway:9.16.1-alpine
 ARG UPSTREAM_VERSION
-RUN apk update && apk add postgresql-client
+
+RUN apk update && apk --no-cache add postgresql-client
 COPY entrypoint.sh /usr/local/bin/entrypoint.sh
-RUN chmod +x /usr/local/bin/entrypoint.sh && rm /flyway/sql/put-your-sql-migrations-here.txt
+RUN chmod +x /usr/local/bin/entrypoint.sh && rm -rf /flyway/sql/*
 COPY --from=postgres-migrations /usr/src/app/web3signer-${UPSTREAM_VERSION}/slashing-protection/src/main/resources/migrations/postgresql/* /flyway/sql/
 ENTRYPOINT ["entrypoint.sh"]
\ No newline at end of file
diff --git a/postgres/Dockerfile b/postgres/Dockerfile
index fbe5683..f5e7012 100644
--- a/postgres/Dockerfile
+++ b/postgres/Dockerfile
@@ -1,37 +1,37 @@
-ARG UPSTREAM_VERSION
-
-##########
-# FLYWAY #
-##########
-#FROM flyway/flyway:8.0.5-alpine as binary-flyway
-#COPY --from=binary-flyway /flyway/flyway /usr/local/bin/flyway
-
 ##############
 # MIGRATIONS #
 ##############
-FROM debian:bullseye-slim as postgres-migrations
+FROM alpine:3.15.10 as postgres-migrations
 ARG UPSTREAM_VERSION
 WORKDIR /usr/src/app
 
-RUN apt update && apt install -y wget
-# Get migrations from consensys web3signer repo
-# path is /usr/src/app/web3signer-21.10.0/slashing-protection/src/main/resources/migrations/postgresql
+# Install wget and other dependencies, if necessary
+RUN apk --no-cache add wget
+
+# Get migrations from ConsenSys web3signer repository
 RUN wget -q https://github.com/ConsenSys/web3signer/archive/refs/tags/${UPSTREAM_VERSION}.tar.gz && \
-    tar -xvf ${UPSTREAM_VERSION}.tar.gz
+    tar -xvf ${UPSTREAM_VERSION}.tar.gz && \
+    rm ${UPSTREAM_VERSION}.tar.gz
 
 ############
 # POSTGRES #
 ############
-FROM postgres:14.1-bullseye
+FROM postgres:14.1-alpine3.15
+
 ARG UPSTREAM_VERSION
-ENV POSTGRES_PASSWORD=gnosis
-ENV PGPASSWORD=gnosis
-ENV POSTGRES_USER=postgres
-ENV POSTGRES_DB=web3signer-gnosis
-RUN apt update && apt install -y rename
 
-COPY --from=postgres-migrations /usr/src/app/web3signer-${UPSTREAM_VERSION}/slashing-protection/src/main/resources/migrations/postgresql/* /docker-entrypoint-initdb.d/
-# Rename scripts to be executed in alfabetical order
-RUN rename 's/(\d+)(?=.*\.)/sprintf("%03d",$1)/eg' /docker-entrypoint-initdb.d/*
+ENV POSTGRES_PASSWORD=gnosis \
+    PGPASSWORD=gnosis \
+    POSTGRES_USER=postgres \ 
+    POSTGRES_DB=web3signer-gnosis \
+    INITDB_DIR=/docker-entrypoint-initdb.d/
+
+COPY rename_files.sh /usr/local/bin/rename_files.sh
+
+COPY --from=postgres-migrations /usr/src/app/web3signer-${UPSTREAM_VERSION}/slashing-protection/src/main/resources/migrations/postgresql/* ${INITDB_DIR}
+
+RUN /usr/local/bin/rename_files.sh
+
+USER postgres
 
-CMD ["postgres"]
+CMD ["postgres"]
\ No newline at end of file
diff --git a/postgres/rename_files.sh b/postgres/rename_files.sh
new file mode 100755
index 0000000..419eac1
--- /dev/null
+++ b/postgres/rename_files.sh
@@ -0,0 +1,15 @@
+#!/bin/sh
+
+# Loop over each file in the /docker-entrypoint-initdb.d directory
+for file in ${INITDB_DIR}*; do
+    # Extract the base name and directory of the file
+    dir=$(dirname "$file")
+    base=$(basename "$file")
+
+    # Use sed to modify the file name
+    # This will pad the first number in the file name with zeros to make it three digits long
+    new_base=$(echo "$base" | sed -r 's/([0-9]+)/000\1/g; s/0*([0-9]{3})/\1/g')
+
+    # Move (rename) the file to its new name
+    mv "$dir/$base" "$dir/$new_base"
+done
diff --git a/web3signer/Dockerfile b/web3signer/Dockerfile
index a65067d..3bffaea 100644
--- a/web3signer/Dockerfile
+++ b/web3signer/Dockerfile
@@ -6,7 +6,7 @@ ARG UPSTREAM_VERSION
 
 FROM consensys/web3signer:$UPSTREAM_VERSION
 USER root
-RUN apt update && apt install ca-certificates unzip --yes
+RUN apt update && apt install ca-certificates --yes
 
 COPY /security /security
 COPY entrypoint.sh /usr/bin/entrypoint.sh
diff --git a/web3signer/entrypoint.sh b/web3signer/entrypoint.sh
index d05aeaa..7f34c09 100755
--- a/web3signer/entrypoint.sh
+++ b/web3signer/entrypoint.sh
@@ -44,7 +44,7 @@ esac
 mkdir -p "$KEYFILES_DIR"
 mkdir -p "/opt/web3signer/manual_migration"
 
-if grep -Fq "/opt/web3signer/keyfiles" ${KEYFILES_DIR}/*.yaml ;then
+if grep -Fq "/opt/web3signer/keyfiles" ${KEYFILES_DIR}/*.yaml; then
   sed -i "s|/opt/web3signer/keyfiles|$KEYFILES_DIR|g" ${KEYFILES_DIR}/*.yaml
 fi