diff --git a/backend/backend.dockerfile b/backend/backend.dockerfile
index 3c3ee89..5af1988 100644
--- a/backend/backend.dockerfile
+++ b/backend/backend.dockerfile
@@ -1,4 +1,4 @@
-FROM python:3.10
+FROM python:3.10-alpine
 
 WORKDIR /app/
 
@@ -10,8 +10,8 @@ COPY ./app/pyproject.toml ./app/poetry.lock* /app/
 
 # Allow installing dev dependencies to run tests
 ARG INSTALL_DEV=false
-RUN bash -c "poetry self add https://pypi.tuna.tsinghua.edu.cn/packages/a8/ea/1a6df188d97a2f762a92e6df8ce75e0d25e6caefaa3a079c2d4efae7d721/poetry_plugin_pypi_mirror-0.4.1-py3-none-any.whl#sha256=51d1fabd782e670bfeb66beaf821df462649d8f6147c7efb02d1c71fe3c17f7b"
-RUN bash -c "if [ $INSTALL_DEV == 'true' ] ; then POETRY_PYPI_MIRROR_URL=https://pypi.tuna.tsinghua.edu.cn/simple poetry install --no-root ; else POETRY_PYPI_MIRROR_URL=https://pypi.tuna.tsinghua.edu.cn/simple poetry install --no-root --only main ; fi"
+RUN poetry self add https://pypi.tuna.tsinghua.edu.cn/packages/a8/ea/1a6df188d97a2f762a92e6df8ce75e0d25e6caefaa3a079c2d4efae7d721/poetry_plugin_pypi_mirror-0.4.1-py3-none-any.whl#sha256=51d1fabd782e670bfeb66beaf821df462649d8f6147c7efb02d1c71fe3c17f7b
+RUN sh -c "if [ $INSTALL_DEV == 'true' ] ; then POETRY_PYPI_MIRROR_URL=https://pypi.tuna.tsinghua.edu.cn/simple poetry install --no-root ; else POETRY_PYPI_MIRROR_URL=https://pypi.tuna.tsinghua.edu.cn/simple poetry install --no-root --only main ; fi"
 
 COPY ./app /app
 
diff --git a/backend/celeryworker.dockerfile b/backend/celeryworker.dockerfile
index 1cfabc1..f47dbe4 100644
--- a/backend/celeryworker.dockerfile
+++ b/backend/celeryworker.dockerfile
@@ -1,4 +1,4 @@
-FROM python:3.10
+FROM python:3.10-alpine
 
 WORKDIR /app/
 
@@ -10,8 +10,8 @@ COPY ./app/pyproject.toml ./app/poetry.lock* /app/
 
 # Allow installing dev dependencies to run tests
 ARG INSTALL_DEV=false
-RUN bash -c "poetry self add https://pypi.tuna.tsinghua.edu.cn/packages/a8/ea/1a6df188d97a2f762a92e6df8ce75e0d25e6caefaa3a079c2d4efae7d721/poetry_plugin_pypi_mirror-0.4.1-py3-none-any.whl#sha256=51d1fabd782e670bfeb66beaf821df462649d8f6147c7efb02d1c71fe3c17f7b"
-RUN bash -c "if [ $INSTALL_DEV == 'true' ] ; then POETRY_PYPI_MIRROR_URL=https://pypi.tuna.tsinghua.edu.cn/simple poetry install --no-root ; else POETRY_PYPI_MIRROR_URL=https://pypi.tuna.tsinghua.edu.cn/simple poetry install --no-root --only main ; fi"
+RUN poetry self add https://pypi.tuna.tsinghua.edu.cn/packages/a8/ea/1a6df188d97a2f762a92e6df8ce75e0d25e6caefaa3a079c2d4efae7d721/poetry_plugin_pypi_mirror-0.4.1-py3-none-any.whl#sha256=51d1fabd782e670bfeb66beaf821df462649d8f6147c7efb02d1c71fe3c17f7b
+RUN sh -c "if [ $INSTALL_DEV == 'true' ] ; then POETRY_PYPI_MIRROR_URL=https://pypi.tuna.tsinghua.edu.cn/simple poetry install --no-root ; else POETRY_PYPI_MIRROR_URL=https://pypi.tuna.tsinghua.edu.cn/simple poetry install --no-root --only main ; fi"
 ENV C_FORCE_ROOT=1
 
 COPY ./app /app
@@ -23,4 +23,4 @@ COPY ./app/worker-start.sh /worker-start.sh
 
 RUN chmod +x /worker-start.sh
 
-CMD ["bash", "/worker-start.sh"]
+CMD ["sh", "/worker-start.sh"]