diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index e88c39ce9..c3b497f74 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -42,22 +42,22 @@ jobs:
         run: echo "Triggered by ${{ github.event_name }}"
 
       - name: Checkout code
-        uses: actions/checkout@v4
+        uses: actions/checkout@v4.3.0
 
       - name: Set up QEMU
-        uses: docker/setup-qemu-action@v3
+        uses: docker/setup-qemu-action@v3.6.0
 
       - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v3
+        uses: docker/setup-buildx-action@v3.11.1
 
       - name: Login to Docker Hub
-        uses: docker/login-action@v3
+        uses: docker/login-action@v3.5.0
         with:
           username: ${{ secrets.DOCKER_USERNAME }}
           password: ${{ secrets.DOCKER_PASSWORD }}
 
       - name: Login to GitHub Container Registry
-        uses: docker/login-action@v3
+        uses: docker/login-action@v3.5.0
         with:
           registry: ghcr.io
           username: ${{ github.actor }}
@@ -65,7 +65,7 @@ jobs:
 
       - name: Generate Docker metadata (slim)
         id: meta-slim
-        uses: docker/metadata-action@v5
+        uses: docker/metadata-action@v5.8.0
         with:
           images: |
             name=rommapp/romm
@@ -85,7 +85,7 @@ jobs:
 
       - name: Generate Docker metadata (full)
         id: meta
-        uses: docker/metadata-action@v5
+        uses: docker/metadata-action@v5.8.0
         with:
           images: |
             name=rommapp/romm
@@ -106,7 +106,7 @@ jobs:
 
       - name: Build slim image
         id: build-slim
-        uses: docker/build-push-action@v6
+        uses: docker/build-push-action@v6.18.0
         with:
           file: docker/Dockerfile
           context: .
@@ -118,7 +118,7 @@ jobs:
 
       - name: Build full image
         id: build-full
-        uses: docker/build-push-action@v6
+        uses: docker/build-push-action@v6.18.0
         with:
           file: docker/Dockerfile
           context: .
diff --git a/.github/workflows/i18n.yml b/.github/workflows/i18n.yml
index f513c62d0..de0a94b82 100644
--- a/.github/workflows/i18n.yml
+++ b/.github/workflows/i18n.yml
@@ -13,10 +13,10 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v4
+        uses: actions/checkout@v4.3.0
 
       - name: Set up Python 3.13
-        uses: actions/setup-python@v5
+        uses: actions/setup-python@v6.0.0
         with:
           python-version: "3.13"
 
diff --git a/.github/workflows/pytest.yml b/.github/workflows/pytest.yml
index 51c857d23..ba998fdde 100644
--- a/.github/workflows/pytest.yml
+++ b/.github/workflows/pytest.yml
@@ -31,7 +31,7 @@ jobs:
         options: --health-cmd="mysqladmin ping" --health-interval=5s --health-timeout=2s --health-retries=3
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v4.3.0
 
       - name: Install mariadb connectors
         run: |
@@ -39,7 +39,7 @@ jobs:
           sudo apt-get install -y libmariadb3 libmariadb-dev
 
       - name: Install uv
-        uses: astral-sh/setup-uv@v5
+        uses: astral-sh/setup-uv@v6.7.0
 
       - name: Install python
         run: |
@@ -62,7 +62,7 @@ jobs:
           uv run pytest -vv --maxfail=10 --junitxml=pytest-report.xml --cov --cov-report xml:coverage.xml --cov-config=.coveragerc .
 
       - name: Publish test results
-        uses: EnricoMi/publish-unit-test-result-action/linux@v2
+        uses: EnricoMi/publish-unit-test-result-action/linux@sha-3a74b29
         if: (!cancelled())
         with:
           files: |
diff --git a/.github/workflows/test-build.yml b/.github/workflows/test-build.yml
index f1714fcdc..089585b82 100644
--- a/.github/workflows/test-build.yml
+++ b/.github/workflows/test-build.yml
@@ -26,26 +26,26 @@ jobs:
         run: echo "Triggered by ${{ github.event_name }}"
 
       - name: Checkout code
-        uses: actions/checkout@v4
+        uses: actions/checkout@v4.3.0
         with:
           ref: ${{ github.event.inputs.branch }}
           fetch-depth: 0
 
       - name: Set up QEMU
-        uses: docker/setup-qemu-action@v3
+        uses: docker/setup-qemu-action@v3.6.0
 
       - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v3
+        uses: docker/setup-buildx-action@v3.11.1
 
       - name: Login to Docker Hub
-        uses: docker/login-action@v3
+        uses: docker/login-action@v3.5.0
         with:
           username: ${{ secrets.DOCKER_USERNAME }}
           password: ${{ secrets.DOCKER_PASSWORD }}
 
       - name: Generate Docker metadata
         id: meta
-        uses: docker/metadata-action@v5
+        uses: docker/metadata-action@v5.8.0
         with:
           images: |
             name=rommapp/romm-testing
@@ -54,7 +54,7 @@ jobs:
 
       - name: Build full image
         id: build-full
-        uses: docker/build-push-action@v6
+        uses: docker/build-push-action@v6.18.0
         with:
           file: docker/Dockerfile
           context: .
diff --git a/.github/workflows/trunk-check.yml b/.github/workflows/trunk-check.yml
index 033b4bea5..e5c4f8dab 100644
--- a/.github/workflows/trunk-check.yml
+++ b/.github/workflows/trunk-check.yml
@@ -17,6 +17,6 @@ jobs:
       contents: read # For repo checkout
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v4.3.0
       - name: Trunk Check
-        uses: trunk-io/trunk-action@v1
+        uses: trunk-io/trunk-action@v1.2.4
diff --git a/.github/workflows/typecheck.yml b/.github/workflows/typecheck.yml
index 4d6bf4e5b..a9a826ce0 100644
--- a/.github/workflows/typecheck.yml
+++ b/.github/workflows/typecheck.yml
@@ -20,10 +20,10 @@ jobs:
       pull-requests: write
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v4.3.0
 
       - name: Set up Node.js
-        uses: actions/setup-node@v4
+        uses: actions/setup-node@v5.0.0
         with:
           node-version: "18"
 
diff --git a/.trunk/setup-ci/action.yaml b/.trunk/setup-ci/action.yaml
index b0b37da43..0021cf330 100644
--- a/.trunk/setup-ci/action.yaml
+++ b/.trunk/setup-ci/action.yaml
@@ -5,7 +5,7 @@ runs:
   using: composite
   steps:
     - name: Setup node
-      uses: actions/setup-node@v4
+      uses: actions/setup-node@v5.0.0
       with:
         node-version: 18
 
diff --git a/docker/Dockerfile b/docker/Dockerfile
index c420ca4c0..86a109a26 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -11,26 +11,39 @@
 #   - dev-slim: Slim image with development dependencies
 #   - dev-full: Full image with emulator stage and development dependencies
 
-# Versions:
+
+# ARGUMENT DECLARATIONS
 ARG ALPINE_VERSION=3.22
-ARG NGINX_VERSION=1.29.0
-ARG NODE_VERSION=20.19
+ARG ALPINE_SHA256=4bcff63911fcb4448bd4fdacec207030997caf25e9bea4045fa6c8c44de311d1
 ARG PYTHON_VERSION=3.13
-
-# Alias stages:
-FROM python:${PYTHON_VERSION}-alpine${ALPINE_VERSION} AS python-alias
+ARG PYTHON_ALPINE_SHA256=9ba6d8cbebf0fb6546ae71f2a1c14f6ffd2fdab83af7fa5669734ef30ad48844
+ARG NODE_VERSION=20.19
+ARG NODE_ALPINE_SHA256=eabac870db94f7342d6c33560d6613f188bbcf4bbe1f4eb47d5e2a08e1a37722
+ARG NGINX_VERSION=1.29.1
+ARG NGINX_SHA256=42a516af16b852e33b7682d5ef8acbd5d13fe08fecadc7ed98605ba5e3b26ab8
+ARG UV_VERSION=0.7.19
+ARG UV_SHA256=9ce16aa2fe33496c439996865dc121371bb33fd5fb37500007d48e2078686b0d
 
 
-FROM node:${NODE_VERSION}-alpine${ALPINE_VERSION} AS frontend-build
+FROM python:${PYTHON_VERSION}-alpine${ALPINE_VERSION}@sha256:${PYTHON_ALPINE_SHA256} AS python-alias
+
+
+# FRONTEND BUILD
+FROM node:${NODE_VERSION}-alpine${ALPINE_VERSION}@sha256:${NODE_ALPINE_SHA256} AS frontend-build
 WORKDIR /front
 
 COPY ./frontend/package*.json ./
-RUN npm ci
+RUN npm ci --ignore-scripts --no-audit --no-fund
 
 COPY ./frontend ./
 RUN npm run build
 
 
+# https://github.com/astral-sh/uv/pkgs/container/uv/452595714
+FROM ghcr.io/astral-sh/uv:${UV_VERSION}-python${PYTHON_VERSION}-alpine@sha256:${UV_SHA256} AS uv-stage
+
+
+# BACKEND PYTHON BUILD
 FROM python-alias AS backend-build
 
 # git is needed to install streaming-form-data fork
@@ -43,14 +56,13 @@ RUN apk add --no-cache \
     mariadb-connector-c-dev \
     musl-dev
 
-COPY --from=ghcr.io/astral-sh/uv:0.7.19 /uv /uvx /bin/
+COPY --from=uv-stage /usr/local/bin/uv /usr/local/bin/uvx /bin/
 
 WORKDIR /src
 
 COPY ./pyproject.toml ./uv.lock /src/
 RUN uv sync --locked --no-cache
 
-
 FROM backend-build AS backend-dev-build
 
 # linux-headers is needed to install psutil
@@ -60,8 +72,8 @@ RUN apk add --no-cache \
 RUN uv sync --locked --no-cache --all-extras
 
 
-FROM alpine:${ALPINE_VERSION} AS rahasher-build
-
+# CUSTOM RAHASHER FOR RETROACHIEVEMENTS
+FROM alpine:${ALPINE_VERSION}@sha256:${ALPINE_SHA256} AS rahasher-build
 RUN apk add --no-cache \
     g++ \
     git \
@@ -84,24 +96,34 @@ RUN git clone --recursive --branch "${RALIBRETRO_VERSION}" --depth 1 https://git
     make HAVE_CHD=1 -f ./Makefile.RAHasher
 
 
-FROM alpine:${ALPINE_VERSION} AS emulator-stage
+# FETCH EMULATORJS AND RUFFLE
+FROM alpine:${ALPINE_VERSION}@sha256:${ALPINE_SHA256} AS emulator-stage
 
 RUN apk add --no-cache \
     7zip \
-    wget
+    wget \
+    ca-certificates
 
 ARG EMULATORJS_VERSION=4.2.3
+ARG EMULATORJS_SHA256=07d451bc06fa3ad04ab30d9b94eb63ac34ad0babee52d60357b002bde8f3850b
+
 RUN wget "https://github.com/EmulatorJS/EmulatorJS/releases/download/v${EMULATORJS_VERSION}/${EMULATORJS_VERSION}.7z" && \
+    echo "${EMULATORJS_SHA256}  ${EMULATORJS_VERSION}.7z" | sha256sum -c - && \
     7z x -y "${EMULATORJS_VERSION}.7z" -o/emulatorjs && \
-    rm -rf "${EMULATORJS_VERSION}.7z";
+    rm -f "${EMULATORJS_VERSION}.7z"
 
 ARG RUFFLE_VERSION=nightly-2025-08-14
 ARG RUFFLE_FILE=ruffle-nightly-2025_08_14-web-selfhosted.zip
-RUN wget "https://github.com/ruffle-rs/ruffle/releases/download/${RUFFLE_VERSION}/${RUFFLE_FILE}" && \
-    unzip -o "${RUFFLE_FILE}" -d /ruffle && \
-    rm -f "${RUFFLE_FILE}";
+ARG RUFFLE_SHA256=178870c5e7dd825a8df35920dfc5328d83e53f3c4d5d95f70b1ea9cd13494151
 
-FROM alpine:${ALPINE_VERSION} AS nginx-build
+RUN wget "https://github.com/ruffle-rs/ruffle/releases/download/${RUFFLE_VERSION}/${RUFFLE_FILE}" && \
+    echo "${RUFFLE_SHA256}  ${RUFFLE_FILE}" | sha256sum -c - && \
+    unzip -o "${RUFFLE_FILE}" -d /ruffle && \
+    rm -f "${RUFFLE_FILE}"
+
+
+# BUILD NGINX MODULE WITH MOD_ZIP
+FROM alpine:${ALPINE_VERSION}@sha256:${ALPINE_SHA256} AS nginx-build
 
 RUN apk add --no-cache \
     gcc \
@@ -115,14 +137,14 @@ ARG NGINX_VERSION
 # The specified commit SHA is the latest commit on the `master` branch at the time of writing.
 # It includes a fix to correctly calculate CRC-32 checksums when using upstream subrequests.
 # TODO: Move to a tagged release of `mod_zip`, once a version newer than 1.3.0 is released.
-ARG NGINX_MOD_ZIP_SHA=a9f9afa441117831cc712a832c98408b3f0416f6
+ARG NGINX_MOD_ZIP_COMMIT=a9f9afa441117831cc712a832c98408b3f0416f6
 
-# Clone both nginx and `ngx_http_zip_module` repositories, needed to compile the module from source.
+# Clone both `nginx` and `ngx_http_zip_module` repositories, needed to compile the module from source.
 # This is needed to be able to dinamically load it as a module in the final image. `nginx` Docker
 # images do not have a simple way to include third-party modules.
 RUN git clone https://github.com/evanmiller/mod_zip.git && \
     cd ./mod_zip && \
-    git checkout "${NGINX_MOD_ZIP_SHA}" && \
+    git checkout "${NGINX_MOD_ZIP_COMMIT}" && \
     cd ../ && \
     git clone --branch "release-${NGINX_VERSION}" --depth 1 https://github.com/nginx/nginx.git && \
     cd ./nginx && \
@@ -131,10 +153,10 @@ RUN git clone https://github.com/evanmiller/mod_zip.git && \
     chmod 644 ./objs/ngx_http_zip_module.so
 
 
-FROM nginx:${NGINX_VERSION}-alpine${ALPINE_VERSION} AS production-stage
+# PRODUCTION STAGE
+FROM nginx:${NGINX_VERSION}-alpine${ALPINE_VERSION}@sha256:${NGINX_SHA256} AS production-stage
 ARG WEBSERVER_FOLDER=/var/www/html
 
-# Install required packages and dependencies
 RUN apk add --no-cache \
     bash \
     libmagic \
@@ -175,13 +197,15 @@ COPY ./docker/gunicorn/logging.conf /etc/gunicorn/logging.conf
 # User permissions
 # - Create default user `romm` (1000) and group `romm` (1000).
 # - Create base directories and make default user/group the owner.
-# - Make nginx configuration files writable by everyone, for `envsubst` to work
-#     when a custom UID/GID is used.
+# - Make nginx configuration files writable by everyone for `envsubst` to work
 RUN addgroup -g 1000 -S romm && adduser -u 1000 -D -S -G romm romm && \
-    mkdir /romm /redis-data && chown romm:romm /romm /redis-data && \
+    mkdir /romm /redis-data && \
+    chown romm:romm /romm /redis-data && \
+    chmod 755 /romm /redis-data && \
     chmod -R a+w /etc/nginx/conf.d
 
 
+# SLIM IMAGE
 FROM scratch AS slim-image
 
 COPY --from=production-stage / /
@@ -190,10 +214,15 @@ COPY --from=backend-build /src/.venv /src/.venv
 
 ENV PATH="/src/.venv/bin:${PATH}"
 
+# Security: Set security-focused environment variables
+ENV PYTHONDONTWRITEBYTECODE=1
+ENV PYTHONUNBUFFERED=1
+ENV PYTHONPATH=/backend
+
 # Declare the supported volumes
 VOLUME ["/romm/resources", "/romm/library", "/romm/assets", "/romm/config", "/redis-data"]
 
-# Expose ports and start
+# Expose non-privileged ports
 EXPOSE 8080 6379/tcp
 WORKDIR /romm
 
@@ -201,6 +230,7 @@ ENTRYPOINT ["/docker-entrypoint.sh"]
 CMD ["/init"]
 
 
+# FULL IMAGE
 FROM slim-image AS full-image
 ARG WEBSERVER_FOLDER=/var/www/html
 COPY --from=emulator-stage /emulatorjs ${WEBSERVER_FOLDER}/assets/emulatorjs
diff --git a/frontend/package-lock.json b/frontend/package-lock.json
index c9f2f7855..c832ac893 100644
--- a/frontend/package-lock.json
+++ b/frontend/package-lock.json
@@ -23,6 +23,7 @@
         "qrcode": "^1.5.4",
         "semver": "^7.6.2",
         "socket.io-client": "^4.7.5",
+        "tailwindcss": "^4.0.0",
         "vanilla-tilt": "^1.8.1",
         "vue": "^3.4.27",
         "vue-i18n": "^11.1.10",
@@ -44,7 +45,6 @@
         "eslint-plugin-vue": "^9.33.0",
         "globals": "^16.0.0",
         "openapi-typescript-codegen": "^0.29.0",
-        "tailwindcss": "^4.0.0",
         "typescript": "^5.7.3",
         "typescript-eslint": "^8.42.0",
         "vite": "^6.3.6",
@@ -8374,7 +8374,6 @@
       "version": "4.1.12",
       "resolved": "https://registry.npmjs.org/tailwindcss/-/tailwindcss-4.1.12.tgz",
       "integrity": "sha512-DzFtxOi+7NsFf7DBtI3BJsynR+0Yp6etH+nRPTbpWnS2pZBaSksv/JGctNwSWzbFjp0vxSqknaUylseZqMDGrA==",
-      "dev": true,
       "license": "MIT"
     },
     "node_modules/tapable": {
diff --git a/frontend/package.json b/frontend/package.json
index 8e3b2defe..772b1bf15 100644
--- a/frontend/package.json
+++ b/frontend/package.json
@@ -21,7 +21,7 @@
   "type": "module",
   "scripts": {
     "dev": "vite --host",
-    "build": "npm run typecheck && vite build",
+    "build": "vite build",
     "preview": "vite preview",
     "typecheck": "vue-tsc --noEmit",
     "generate": "openapi --input http://127.0.0.1:3000/openapi.json --output ./src/__generated__ --client axios --useOptions --useUnionTypes --exportServices false --exportSchemas false --exportCore false",
@@ -42,6 +42,7 @@
     "qrcode": "^1.5.4",
     "semver": "^7.6.2",
     "socket.io-client": "^4.7.5",
+    "tailwindcss": "^4.0.0",
     "vanilla-tilt": "^1.8.1",
     "vue": "^3.4.27",
     "vue-i18n": "^11.1.10",
@@ -63,7 +64,6 @@
     "eslint-plugin-vue": "^9.33.0",
     "globals": "^16.0.0",
     "openapi-typescript-codegen": "^0.29.0",
-    "tailwindcss": "^4.0.0",
     "typescript": "^5.7.3",
     "typescript-eslint": "^8.42.0",
     "vite": "^6.3.6",